Knowledge Hub
Biohacking Guides
Deep, evidence-rated guides on every major biohacking method. Science, protocols, real experiences, community consensus, and trusted equipment recommendations, all in one place.
Buying Guides & Comparisons
187 guides
Heat TherapyInfrared Sauna: The Complete Guide
Regular sauna use is one of the strongest lifestyle interventions linked to reduced cardiovascular mortality in decades of Finnish research. This guide covers how infrared saunas work, Huberman and Rhonda Patrick's protocols, what you'll actually feel, the risks nobody mentions, and what 10,000+ Reddit users report.
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Cold TherapyCold Exposure: The Complete Guide
Deliberate cold exposure is one of the most accessible biohacks with measurable effects on norepinephrine, dopamine, metabolism, and mental resilience. This guide breaks down the Huberman protocol (11 min/week), the Wim Hof method, what happens to your body, and how to build a sustainable practice.
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Light TherapyRed Light Therapy: The Complete Guide
Red and near-infrared light therapy (photobiomodulation) uses specific wavelengths to enhance mitochondrial function, accelerate recovery, and support skin health. This guide explains the science, optimal wavelengths, daily protocols, and how to evaluate the crowded device market.
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Sleep OptimizationSleep Optimization: The Complete Guide
Sleep is the foundation every biohacker builds on, Huberman calls it the #1 performance enhancer. This guide covers the science of sleep stages, temperature regulation, light protocols, tracking with wearables, and the complete toolkit for deep restorative sleep.
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SupplementsNAD+ & Longevity: The Complete Guide
NAD+ is one of the most critical molecules in human biology, essential for energy, DNA repair, and activating longevity pathways. Levels decline ~50% between ages 40–60. This guide explains what NAD+ does, whether supplementation works, NR vs NMN debate, and how to test your levels.
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Diagnostics & TestingContinuous Glucose Monitoring: The Complete Guide
A continuous glucose monitor (CGM) reveals how YOUR body responds to food in real-time, not population averages. Dave Asprey calls it the most impactful health tool he's used. This guide covers how CGMs work, what you'll learn, and how to use the data to optimize energy, weight, and long-term metabolic health.
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Wearables & TrackersHRV & Recovery Tracking: The Complete Guide
Heart rate variability (HRV) is the most actionable biometric for biohackers, it tells you when to push hard and when to rest. This guide explains what HRV means, how Oura and WHOOP use it, lifestyle factors that destroy recovery, and how to actually use the data. Ready to buy? See Oura vs WHOOP or Garmin vs Oura vs WHOOP.
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PeptidesPeptides for Recovery & Longevity: A Beginner's Guide
Peptides are short chains of amino acids that act as signaling molecules in the body. The biohacking community uses them for recovery (BPC-157), tissue repair (TB-500), and longevity (epitalon). This guide explains the science, the evidence gaps, sourcing risks, and legal status, especially relevant for NZ and international readers.
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SupplementsCreatine Dose: 5g Daily for Muscle, Bone, and Brain
Take 5 g of creatine monohydrate every day for muscle, bone, and brain. You do not need a separate higher daily dose for bone — the bone research is still early and is studied with lifting, at ordinary doses. Some short brain studies use about 10–20 g a day, split up. That is a research protocol, not the daily dose this guide uses. Saturation from 5 g a day is the default.
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SupplementsMagnesium: The Complete Guide
Up to 50% of adults may not meet optimal magnesium intake. It's involved in 300+ enzymatic reactions, sleep, muscle recovery, stress, and heart rhythm all depend on it. This guide breaks down which form to take, when, and how much.
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Procedures & TreatmentsHyperbaric Oxygen Therapy: The Complete Guide
Hyperbaric oxygen therapy (HBOT) delivers 100% oxygen at elevated pressure, saturating tissues beyond normal breathing. FDA-approved for wound healing and decompression sickness, but wellness clinics now market it for longevity, brain injury, and athletic recovery. This guide separates approved uses from hype.
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Procedures & TreatmentsStem Cell Therapy: The Complete Guide
Stem cell therapy promises tissue regeneration, anti-aging, and recovery from degenerative conditions. Some applications are FDA-approved; most wellness clinic offerings are experimental, expensive, and poorly regulated. This guide explains what's real, what's risky, and what questions to ask before spending $5,000–$50,000.
Read guideSupplementsBryan Johnson's Blueprint: The Complete Guide
Bryan Johnson spends ~$2M/year on his 'Don't Die' anti-aging protocol, the most measured human body in history. Blueprint includes 100+ daily supplements, precise sleep/calorie timing, plasma exchange, and relentless biomarker tracking. This guide breaks down what's evidence-based, what's experimental, and what mere mortals can actually adopt.
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Cognitive EnhancementNootropics: The Complete Beginner's Guide
Nootropics, 'smart drugs' and cognitive enhancers, range from daily coffee to prescription modafinil. This guide covers the evidence-backed tier list, the caffeine + L-theanine stack, mushroom nootropics, and why sleep beats any pill.
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Cognitive EnhancementBreathwork: The Complete Guide
Breathwork is the most accessible biohack, free, immediate, and backed by real physiology. From Wim Hof's hyperventilation cycles to Navy SEAL box breathing, controlled breathing shifts autonomic state in minutes. This guide covers protocols, mechanisms, and building a daily practice.
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Wearables & TrackersZone 2 Heart Rate Chart: Attia Targets by Age
Peter Attia does not publish a single official zone 2 heart rate chart. He uses a talk test, and in a lab a lactate reading near 2 mmol/L. The chart below is the practical substitute: a Maffetone ceiling of 180 minus age, next to 60–70% of estimated max heart rate. Stay under the ceiling only if you can still speak in full sentences, for 3–4 hours a week.
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Diagnostics & TestingGut Microbiome: The Complete Guide
Your gut microbiome, 100 trillion bacteria, influences immunity, mood, metabolism, and inflammation. Bryan Johnson tests his monthly. This guide covers microbiome testing, evidence-based interventions, and what actually moves the needle vs marketing.
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SupplementsOmega-3 Fatty Acids: The Complete Guide
Omega-3 fatty acids (EPA and DHA) are essential for brain structure, cardiovascular health, and inflammation control. Most Western diets are deficient. This guide covers dosing, quality testing, the Omega-3 Index, and how to choose a fish oil.
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Tools & EquipmentEnvironmental Health: Air & Water Guide
You can't out-supplement a toxic environment. Indoor air quality, water contamination (PFAS, lead, chlorine), and EMF exposure are foundational biohacking concerns. This guide covers practical home upgrades ranked by impact and cost.
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SupplementsVitamin D: The Complete Guide
Vitamin D is technically a hormone, involved in immunity, bone health, mood, and 200+ gene expressions. Deficiency affects ~40% of adults in temperate climates. This guide covers testing, dosing, K2 pairing, and sun vs supplement tradeoffs.
Read guideSupplementsIntermittent Fasting: The Complete Guide
Intermittent fasting (IF) is one of the most practiced biohacks worldwide, popularized by Dave Asprey's Bulletproof approach and validated by decades of metabolic research. This guide covers 16:8 vs OMAD, ketosis timing, autophagy windows, and who should avoid fasting.
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Cognitive EnhancementBulletproof Coffee: The Complete Guide
Bulletproof Coffee, coffee blended with grass-fed butter and MCT oil, is Dave Asprey's signature biohack and the drink that launched the modern biohacking movement. This guide covers the science of fat-fueled mornings, C8 MCT vs C10, mold-free coffee, and how to build the ritual.
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Cognitive EnhancementNeurofeedback: The Complete Guide
Neurofeedback uses real-time EEG monitoring to train your brain toward desired states, more focus, less anxiety, deeper meditation. Dave Asprey invested millions in 40 Years of Zen, claiming IQ gains of 12+ points. This guide separates clinical neurofeedback from consumer devices.
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Cognitive EnhancementVagus Nerve Stimulation: The Complete Guide
The vagus nerve is the master regulator of your parasympathetic nervous system, controlling heart rate, digestion, inflammation, and emotional regulation. Dave Asprey calls vagus nerve toning essential for stress resilience. This guide covers natural stimulation techniques and clinical devices.
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SupplementsTestosterone Optimization: The Complete Guide
Testosterone optimization is one of the most searched biohacking topics, from natural lifestyle interventions to TRT clinics. Dave Asprey discusses hormonal health as core to vitality and longevity. This guide covers evidence-based natural optimization before pharmaceutical intervention.
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SupplementsGlutathione: The Complete Guide
Glutathione is your body's master antioxidant, present in every cell, critical for detoxification, immune function, and mitochondrial health. Dave Asprey calls it 'the most important molecule you need to stay healthy.' This guide covers why oral glutathione fails, liposomal delivery, and NAC as a precursor.
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Cognitive EnhancementLion's Mane Mushroom: The Complete Guide
Lion's mane (Hericium erinaceus) is the most popular mushroom nootropic in biohacking. Animal studies show nerve growth factor (NGF) stimulation; human trials show modest cognitive benefits in mild impairment. This guide covers mechanisms, dosing, product quality, and realistic expectations.
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SupplementsAshwagandha: The Complete Guide
Ashwagandha (Withania somnifera) is the most studied adaptogen in biohacking. Multiple RCTs show cortisol reduction, improved sleep, and modest strength gains. This guide compares KSM-66 and Sensoril extracts, dosing protocols, and important contraindications.
Read guideDiagnostics & TestingBlood Panel Testing: The Complete Guide
Annual bloodwork is the foundation of data-driven biohacking. Peter Attia's framework prioritizes ApoB, insulin, HbA1c, and inflammatory markers over standard lipid panels. This guide covers what to test, how often, where to order, and how to interpret results.
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Sleep OptimizationApigenin for Sleep: The Complete Guide
Apigenin is a flavonoid from chamomile that modulates GABA receptors for sleep support. Andrew Huberman popularized it as part of his sleep stack alongside magnesium threonate and theanine. This guide covers mechanism, dosing, stacking, and realistic expectations.
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PeptidesBPC-157: The Complete Guide
BPC-157 (Body Protection Compound) is the most popular peptide in the biohacking and athletic recovery communities. Extensive animal research shows accelerated healing of tendons, ligaments, gut lining, and muscles. Human clinical data is essentially nonexistent. This guide covers the science, protocols, risks, and legal landscape.
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Heat TherapyContrast Therapy: The Complete Guide
Contrast therapy alternates heat and cold exposure to drive vascular flushing, reduce inflammation, and amplify recovery benefits beyond either modality alone. Popularized by Finnish sauna culture and modern biohackers like Huberman and Patrick. This guide covers protocols, timing, and equipment options.
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PeptidesTB-500: The Complete Guide
TB-500 is a synthetic fragment of thymosin beta-4, a peptide involved in cell migration, angiogenesis, and wound healing. It's widely used alongside BPC-157 for musculoskeletal recovery. Human clinical data is limited; this guide covers the science, protocols, and risks.
Read guideSleep OptimizationGlycine for Sleep: The Complete Guide
Glycine is an amino acid with direct sleep-promoting effects: it lowers core body temperature and improves sleep quality in human trials. At 3g before bed, it's one of the most evidence-backed, affordable sleep supplements. This guide covers mechanism, dosing, and how it fits the Huberman stack.
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Tools & EquipmentGrounding & Earthing: The Complete Guide
Grounding (earthing) connects the body to the Earth's electrical field via direct skin contact with the ground or conductive indoor products. Proponents claim reduced inflammation, better sleep, and improved HRV. The science is mixed but growing. This guide separates mechanism from marketing.
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SupplementsUrolithin A: The Complete Guide
Urolithin A is a gut microbiome metabolite that triggers mitophagy, the selective recycling of damaged mitochondria. Amazentis/Timeline's Mitopure is the first clinically validated urolithin A supplement. This guide covers the science, dosing, and who actually converts ellagic acid from food.
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Sleep OptimizationCircadian Rhythm Optimization: The Complete Guide
Your circadian rhythm governs sleep, hormones, metabolism, and mood. Huberman and Walker's most foundational advice isn't a supplement or gadget, it's light exposure timing. This guide covers the complete circadian protocol: morning sunlight, evening protection, meal timing, and temperature.
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SupplementsCollagen Peptides: The Complete Guide
Collagen peptides are hydrolyzed collagen protein supplements supporting skin elasticity, joint comfort, and gut lining integrity. They're also a significant dietary source of glycine. This guide covers types, dosing, evidence quality, and how collagen fits a biohacking stack.
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Sleep OptimizationBlue Light Blocking: The Complete Guide
Blue light after dark suppresses melatonin and disrupts circadian timing. Amber-tinted blue blocking glasses are one of the most cost-effective sleep interventions. This guide covers lens types, timing, and why screen night mode isn't enough.
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PeptidesEpitalon: The Complete Guide
Epitalon (Epithalon) is a synthetic tetrapeptide studied for telomerase activation and pineal gland function. Developed by Russian gerontologist Vladimir Khavinson, it's popular in longevity circles despite limited Western clinical validation. This guide covers the science, protocols, and realistic expectations.
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SupplementsL-Theanine 200 mg with Caffeine (Huberman)
The focus dose is 200 mg of L-theanine with about 100 mg of caffeine, a 2:1 ratio, in the morning. Huberman’s sleep stack uses 100–200 mg of L-theanine before bed with apigenin and magnesium, without the caffeine. The same 200 mg is the amount used in the alpha-wave studies. Matcha has both compounds, but a cup is too small to match these doses.
Read guideSupplementsVitamin K2: The Complete Guide
Vitamin K2 activates proteins that direct calcium into bones and teeth while preventing arterial calcification. It's the essential partner to vitamin D3 supplementation. This guide covers MK-4 vs MK-7 forms, dosing, and why D3 without K2 may be incomplete.
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SupplementsRhodiola Rosea: The Complete Guide
Rhodiola rosea is a cold-climate adaptogen used for mental stamina, fatigue resistance, and stress buffering. Unlike sedating adaptogens, rhodiola is typically taken in the morning for calm energy. This guide covers SHR-5 and 3% rosavin extracts, dosing, and how it pairs with ashwagandha.
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Sleep OptimizationMouth Tape & Nasal Breathing: The Complete Guide
Mouth taping encourages nasal breathing during sleep, which may reduce snoring, dry mouth, and fragmented sleep architecture. Popularized by James Nestor's 'Breath' and the Buteyko community, it's one of the cheapest sleep biohacks. This guide covers safe taping methods and contraindications.
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SupplementsBerberine: The Complete Guide
Berberine is a plant alkaloid that activates AMPK and lowers blood glucose comparably to metformin in some trials. Biohackers use it for metabolic health, CGM optimization, and longevity signaling. This guide covers 500mg dosing, GI side effects, and CGM pairing.
Read guideSupplementsNAC (N-Acetyl Cysteine): The Complete Guide
NAC is the most bioavailable precursor to glutathione, the body's master antioxidant. Used in hospitals for acetaminophen overdose, biohackers take it for liver support, respiratory health, and oxidative stress. This guide covers 600–1200mg dosing and availability considerations.
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SupplementsCoQ10 (Ubiquinol): The Complete Guide
Coenzyme Q10 is essential for mitochondrial ATP production and is depleted by statin medications and aging. Biohackers supplement ubiquinol for energy, cardiovascular support, and exercise recovery. This guide compares forms, doses, and who benefits most.
Read guideSupplementsTongkat Ali: The Complete Guide
Tongkat ali (Eurycoma longifolia) is a Southeast Asian herb studied for raising free testosterone, reducing cortisol, and improving libido in men with low-normal T. This guide covers LJ100 and Physta extracts, 200–400mg dosing, and blood test monitoring.
Read guideWearables & TrackersOura Ring vs WHOOP (2026): Ring vs Band, Cost & Which to Buy
Oura and WHOOP are the two wearables biohackers debate most. Oura excels at passive sleep staging and HRV detail in an unobtrusive ring. WHOOP excels at training load management with its strain/recovery loop. This guide compares accuracy, pricing, use cases, and who should buy which. Considering Garmin too? See Garmin Fenix vs Oura vs WHOOP.
Read guideSleep OptimizationBedJet vs Chilipad vs Eight Sleep: Which to Buy
Sleep temperature regulation is one of the highest-leverage biohacks with genuine evidence behind it, and three systems dominate the category: Eight Sleep Pod, BedJet 3, and Sleepme's Dock Pro (the modern successor to Chilipad, now owned and re-engineered by the same Sleepme team). Eight Sleep uses hydronic water cooling built into a mattress cover with deep sleep-stage automation. BedJet uses forced air instead of water, with no wet components at all. Sleepme's Dock Pro is the direct descendant of the original Chilipad, focused purely on precise temperature control without the smart-home layer. This guide compares the technology, noise, subscriptions, price, and who should buy which. Want the science and budget tiers first? Read Sleep Cooling.
Read guideLight TherapyBest Red Light Therapy Panel for Home Use: A Biohacker's Buying Guide
Red light therapy (photobiomodulation) panels range from $150 travel-size units to $2,000+ full-body clinical panels, and price alone tells you almost nothing about effectiveness. What actually matters is irradiance at a realistic treatment distance, wavelength accuracy at 630–670nm (red) and 810–850nm (near-infrared), and whether the company publishes third-party testing. This guide compares Joovv's Elite panel, Hooga's budget-friendly HG panel, Mito Red's Mitopro line, and CurrentBody's LED mask for facial use, then breaks down how to choose based on your goals and budget. New to the science? Start with our Red Light Therapy complete guide.
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Tools & EquipmentBest Air Purifier for Biohackers: HEPA, VOC, and CADR Compared
Indoor air quality is an underrated biohacking lever, chronic exposure to fine particulates (PM2.5), VOCs, and allergens is linked to worse sleep, higher inflammatory markers, and reduced cognitive performance. But the air purifier market is full of inflated CADR claims and marketing around 'medical grade' filtration that doesn't always translate to real-world benefit. This guide compares IQAir's HealthPro Plus, AirDoctor's 5500, Blueair's Classic line, and Coway's Airmega, and explains which specs actually matter for a bedroom-focused biohacking setup. Broader home toxins context: Environmental Health. Water side: Water Filtration.
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Wearables & TrackersGarmin Fenix 8 vs Oura vs WHOOP: Which Tracker?
This page compares the Garmin Fenix 8 with Oura and WHOOP. It is not a Fenix 9 Pro review — if a listing says Fenix 9 Pro, the specs below do not apply to it. Fenix 8 is a GPS multisport watch. Oura is a passive sleep ring. WHOOP is a screenless strain band. The [Oura Ring 4 review](/equipment/oura-ring-gen4) covers price and the membership on its own. Narrowed to ring vs band only? See [Oura vs WHOOP](/guides/oura-vs-whoop).
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SupplementsZinc Picolinate Dosage for Men: 15mg vs 30mg
For most men, 15 mg of elemental zinc picolinate with food is the maintain dose. Use 30 mg if you train hard, sweat a lot, or eat little meat. Do not stay above 40 mg a day for months — that is where copper runs low. A 50 mg capsule is a short repletion, not the daily plan. Thorne sells the 15 mg and 30 mg sizes; the buying notes are in [best zinc](/guides/best-zinc).
Read guideSupplementsProbiotics: Strains, Evidence, and What Actually Works
The probiotic market is a $60B mess of underdosed, poorly studied products. But specific strains with clinical trial data can meaningfully support gut health, immune function, and even mood. This guide cuts through marketing to cover evidence-backed strains, dosing in CFUs, spore vs conventional probiotics, and when testing beats guessing.
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Cold TherapyCryotherapy: Whole-Body vs Local, Benefits & Protocols
Whole-body cryotherapy (WBC) promises recovery, inflammation reduction, and mood boosts in 2–3 minute sessions at -200°F. The marketing is ahead of the evidence. This guide compares WBC chambers to ice baths, reviews what research actually shows, covers safety, and helps you decide if $40/session cryo is worth it versus a $5,000 cold plunge at home.
Read guideSupplementsSpermidine: Autophagy, Longevity, and Food Sources
Spermidine is a naturally occurring polyamine found in wheat germ, aged cheese, and mushrooms. It activates autophagy, the cellular cleanup process linked to longevity. Human epidemiological data shows higher dietary spermidine intake correlates with reduced cardiovascular and cancer mortality. This guide covers food sources, supplemental dosing, and how it fits into a longevity stack.
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SupplementsShilajit: Fulvic Acid, Minerals, and the Evidence
Shilajit is a tar-like resin from Himalayan rock, used in Ayurvedic medicine for centuries. Modern interest centers on fulvic acid content, mineral delivery, testosterone support, and mitochondrial function. The evidence is thin but intriguing. The bigger concern: heavy metal contamination in low-quality products. This guide covers what shilajit actually is, what research exists, dosing, and how to source clean resin.
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SupplementsAG1 & Greens Powders: Worth It or Overpriced?
AG1 (Athletic Greens) is the most marketed greens powder in biohacking — 75 ingredients in one scoop. Tim Ferriss and Huberman popularized it as nutritional insurance. This guide breaks down what's actually in greens powders, whether the $80/month price is justified, and how AG1 compares to DIY stacks and whole food.
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Sleep OptimizationSleep Cooling: Mattresses, Pads & Temperature Protocols
Sleep onset requires a 1–3°F core body temperature drop. Hot sleepers, couples with different preferences, and anyone chasing deep sleep often invest in active cooling — from $60 fan setups to $3,000 smart mattresses. This guide covers the science, equipment tiers, and Matthew Walker's temperature targets. For a head-to-head buy decision, see Eight Sleep vs BedJet vs Chilipad.
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SupplementsFisetin & Senolytics: Clearing Zombie Cells
Senolytics are compounds that selectively kill senescent ('zombie') cells — damaged cells that stop dividing but refuse to die, secreting inflammatory signals that accelerate aging. Fisetin, a flavonoid found in strawberries, showed the strongest senolytic activity in Mayo Clinic screens. Human data is early but the biohacking community treats fisetin pulses as a tier-2 longevity intervention.
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Cognitive EnhancementMethylene Blue: Cognitive Enhancement & Mitochondria
Methylene blue is an old dye and medication gaining biohacking attention as a mitochondrial enhancer and nootropic at micro-doses (0.5–4mg). It accepts electrons in the electron transport chain, potentially improving ATP production and brain oxygen utilization. The hype exceeds the evidence — but the mechanism is real and human safety data exists at low doses.
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Tools & EquipmentWater Filtration: PFAS, Fluoride & Home Systems
Tap water quality varies dramatically by region — PFAS ('forever chemicals'), lead, chlorine, fluoride, and microplastics are documented in municipal supplies globally. Water filtration is foundational environmental health, not optional biohacking. This guide compares gravity filters, reverse osmosis, and pitcher systems by what they actually remove.
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PeptidesGHK-Cu: The Copper Peptide Guide
GHK-Cu (copper peptide) is a naturally occurring tripeptide that declines with age. It promotes wound healing, collagen synthesis, and hair follicle stimulation. Unlike BPC-157, GHK-Cu is widely available in topical skincare — but injectable forms are popular in peptide biohacking for systemic effects. This guide covers mechanisms, dosing, and the topical vs injectable debate.
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Tools & EquipmentHigh-Ticket Biohacking Equipment on Amazon
Most premium biohacking gear sells direct-to-consumer only — Oura, Eight Sleep, Joovv, and Plunge require brand websites and long shipping times. But a meaningful tier of $400–$1,000+ equipment is available on Amazon with Prime shipping, buyer protection, and easy returns. This guide maps the highest-ROI high-ticket Amazon purchases by category, what to verify before buying, and where DTC-only brands still win.
Read guideCold TherapyPlunge vs Ice Barrel: Which Cold Plunge Should You Buy?
Home cold plunges split into two camps: chiller-equipped tubs like the Plunge All-In ($5,000) that hold 39°F without ice, and manual barrels like the Ice Barrel 300 ($1,200) where you add ice each session. Both deliver Huberman's 11 min/week protocol — the difference is convenience, running costs, and whether you'll actually use it daily. For the full science and free-to-premium path, start with our Cold Exposure guide.
Read guideTools & EquipmentIQAir vs AirDoctor vs Blueair: Which Air Purifier to Buy
IQAir HealthPro Plus, AirDoctor 5500, and Blueair Classic 480i are the three air purifiers people compare once they have left $150 Amazon units behind. IQAir and AirDoctor both claim capture down to 0.003 microns. Blueair is quieter and cheaper, and stops at 0.1 microns. This page is the buying decision. For particle science and placement, start with Indoor Air Quality.
Read guideTools & EquipmentAquaTru vs Waterdrop: Which Reverse Osmosis System to Buy
AquaTru and Waterdrop G3P800 both use reverse osmosis to cut PFAS, fluoride, and lead. AquaTru sits on the counter and needs no plumber. Waterdrop installs under the sink, runs faster, and is the system you buy when you own the kitchen. This page is that decision. For the wider filter map, including Berkey, see Best Water Filter.
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Tools & EquipmentTheragun vs Hypervolt: Which Massage Gun to Buy
Theragun PRO Plus and Hypervolt 2 Pro are the two massage guns worth comparing once you have ruled out $100 clones. Both hit 16mm of amplitude. Theragun costs $549–$649 and is built around a triangle grip that reaches your own back. Hypervolt costs $399–$449 and adds a pressure sensor. For how to use either one, see Percussion Massage.
Read guideSleep OptimizationBedJet vs Sleepme: Which Sleep Cooling System to Buy
BedJet 3 and Sleepme Dock Pro are the two active sleep-cooling systems you can buy on Amazon. BedJet blows conditioned air under the covers for $399–$549. Sleepme circulates water through a pad on the mattress for $699–$999 and holds a surface temperature. Eight Sleep is the more expensive system, and it is not sold on Amazon. For the science of why temperature matters, start with Sleep Cooling.
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Tools & EquipmentNormatec vs Massage Gun: Which Recovery Tool to Buy
Normatec 3, a massage gun, and a Compex EMS unit get lumped together as 'recovery gear.' They are three different tools. Normatec squeezes fluid up the legs for $699–$899 while you sit still. A Hypervolt or Theragun hits tight muscle for $399–$649. Compex fires the muscle with electrodes for $549–$749. Buy one. For how to use a gun or boots on their own, see Percussion Massage and Compression Recovery.
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Light TherapyRed Light Panel vs Face Mask: Which to Buy
On Amazon, the red-light choice that actually ships is a Hooga panel or a CurrentBody face mask. The panel is $120–$170 and treats skin plus a joint or a muscle at a distance. The mask is $449–$549, sits on the face, and runs a fixed 10-minute skin session. A mask will not treat your back. A small panel is an awkward way to do your face every day. Joovv's large panels are a separate, mostly direct-to-consumer purchase.
Read guideTools & EquipmentBest Water Filter for Biohackers: Berkey vs AquaTru vs Waterdrop Compared
Tap water carries PFAS, fluoride, lead, and microplastics — biohackers filter drinking water for the same reason they filter air. This guide compares Berkey gravity filters, AquaTru countertop reverse osmosis, and Waterdrop under-sink tankless RO by contaminant removal, installation, and cost. For the science on filter types and regional water quality, see our Water Filtration guide.
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Wearables & TrackersStrength Training for Longevity: The Complete Guide
Cardio gets the longevity headlines, but muscle mass, strength, and power are among the strongest predictors of healthy aging. This guide covers why resistance training belongs next to Zone 2, how much is enough, and a beginner-to-intermediate protocol that still works at 70.
Read guideDiagnostics & TestingVO2 Max: The Complete Guide
VO₂ max — the maximum rate at which you can use oxygen — is one of the best-studied predictors of all-cause mortality. Peter Attia calls it a vital sign. This guide covers lab testing vs wearable estimates, what 'good' looks like by age, and a training mix of Zone 2 plus intervals.
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SupplementsTaurine: The Complete Guide
Taurine is a sulfur-containing amino acid abundant in meat, seafood, and energy drinks. A 2023 Science paper linked age-related taurine decline to aging in animals and lit a longevity-community fire. This guide separates the animal data from human evidence, dosing, and who might actually benefit.
Read guideSupplementsRapamycin: The Complete Guide
Rapamycin (sirolimus) is an mTOR inhibitor with the strongest animal lifespan data in the NIA Interventions Testing Program. Longevity clinics now discuss intermittent, physician-supervised use. This guide covers the science, what human trials actually show, risks, and why it does not belong in a self-serve supplement drawer.
Read guidePeptidesGLP-1 Agonists: The Complete Guide
GLP-1 receptor agonists (semaglutide, liraglutide) and dual agonists (tirzepatide) moved from diabetes clinics into mainstream weight and metabolic culture. For biohackers, the live questions are muscle loss, rebound weight, nutrient quality, and whether a peptide drug belongs next to Zone 2 and protein. This is a map of the evidence — not a shortcut to a vial.
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Sleep OptimizationNSDR and Yoga Nidra: The Complete Guide
Non-sleep deep rest (NSDR) is Andrew Huberman's umbrella term for yoga nidra and related guided protocols that drop you into a deeply relaxed, often hypnagogic state without requiring a full nap. This guide covers the sleep and stress evidence, how to run a session, and when NSDR beats caffeine.
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SupplementsProtein for Longevity: The Complete Guide
Protein is the most under-discussed longevity lever after sleep and training. Too little accelerates sarcopenia; the right amount supports muscle, bone, and metabolic health into older decades. This guide covers g/kg targets, meal distribution, and how protein needs change on GLP-1s and during fat loss.
Read guideSupplementsMetformin: The Complete Guide
Metformin is the most prescribed diabetes drug in the world and the most discussed off-label longevity pharmaceutical after rapamycin. It activates AMPK, lowers glucose, and shows epidemiologic links to reduced cancer and mortality in diabetics — but healthy-aging trials are still running. This guide maps the evidence without DIY dosing.
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Tools & EquipmentMicroplastics: The Complete Guide
Microplastics and nanoplastics show up in water, food, air, and now human blood and placenta samples. The health impact is still being quantified, but exposure reduction is actionable today. This guide covers sources, what filters actually help, and a sane home protocol without plastic panic.
Read guideSupplementsHydrogen Water: The Complete Guide
Hydrogen-rich water delivers dissolved molecular hydrogen (H₂), a selective antioxidant studied for exercise recovery, metabolic markers, and inflammation. Japan and Korea popularized it first; Western biohackers now debate tablets, generators, and canned H₂. This guide covers what human trials actually show and whether it belongs in your stack.
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Tools & EquipmentPEMF Therapy: The Complete Guide
PEMF (pulsed electromagnetic field) therapy uses low-frequency magnetic pulses to stimulate tissue repair, reduce pain, and support recovery. FDA-cleared devices exist for specific bone and pain indications; wellness mats and portable units claim broader biohacking benefits. This guide separates regulated medical use from the home recovery stack.
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Diagnostics & TestingOral Microbiome: The Complete Guide
The oral microbiome is a distinct ecosystem — not just a subset of gut health. Oral dysbiosis links to gum disease, cardiovascular inflammation, and possibly cognitive markers. Nasal breathing, hygiene, and targeted oral care are actionable biohacks. This guide connects mouth tape, dental basics, and what actually moves oral bacteria.
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SupplementsElectrolytes & Sodium: The Complete Guide
Electrolytes are the boring infrastructure of biohacking: blood volume, nerve firing, muscle contraction, and how you feel in heat and on low-carb diets. This guide covers sodium, potassium, magnesium synergy, who needs more than RDA sodium, and when LMNT-style packets beat plain water.
Read guideTools & EquipmentCompression Recovery: The Complete Guide
Pneumatic compression boots cycle air through chambers to flush interstitial fluid and reduce perceived soreness after hard training. They are a staple in pro sports and increasingly in home biohacking setups. This guide covers evidence, session timing, and whether boots beat a cheap walk.
Read guideTools & EquipmentPercussion Massage: The Complete Guide
Percussion massage guns deliver rapid pulses to muscle tissue for warm-up, temporary ROM gains, and soreness relief. They are everywhere in gyms and home setups. This guide covers when they help, when they harm, and how they compare to Normatec boots and foam rolling.
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Cognitive EnhancementCaffeine Optimization: The Complete Guide
Caffeine is the most used cognitive biohack on earth — and the most common sleep sabotage. This guide covers circadian timing (Huberman delay), half-life genetics, L-theanine pairing, and when to quit after lunch for HRV and deep sleep.
Read guideWearables & TrackersDaily Walking for Longevity: The Complete Guide
Walking is the highest-ROI movement habit in longevity medicine: lower all-cause mortality, better glucose control, and cognitive benefits — with zero equipment required. This guide separates step-count hype from structured Zone 2, and how wearables should track both.
Read guideHeat TherapyInfrared Sauna Blanket: The Complete Guide
Sauna blankets deliver far-infrared heat in a zip-up cocoon — smaller footprint and lower price than a cabin sauna. They are the entry point for heat biohackers in apartments. This guide compares blankets to traditional infrared saunas, session protocols, and safety limits.
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Wearables & TrackersRucking: The Complete Guide
Rucking is walking with a weighted pack — military in origin, longevity-friendly in practice. It builds aerobic base, leg and core strength, and bone loading without the injury profile of running. This guide covers load progression, heart rate targets, and gear.
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Diagnostics & TestingDEXA vs Ultrasound, Skinfold, and Waist Size
DEXA is the clinic scan that separates fat, lean tissue, and bone. Ultrasound and skinfold calipers estimate fat under the skin and are useful between scans. Waist circumference is the free check. A smart scale is only a trend line. Weight alone misleads people on GLP-1s, creatine, or a new lifting program.
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Diagnostics & TestingApoB & Lipids for Longevity: The Complete Guide
Cardiovascular disease remains a top killer; lipid panels are the cheapest longevity blood test most people skip interpreting correctly. This guide explains ApoB vs LDL-C, Lp(a), and lifestyle plus supplement levers — not statin prescribing.
Read guideLight TherapyRed Light Face Mask: The Complete Guide
Red and near-infrared light stimulate mitochondrial function in skin cells — collagen production, wound healing, and texture improvements show up in dermatology trials. Face masks bring panel therapy to a 10-minute daily habit. This guide covers wavelengths, session length, and realistic expectations.
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Cognitive EnhancementStress Recovery Wearables: The Complete Guide
Wearables for stress split into two camps: trackers that measure HRV (Oura, WHOOP) and devices that try to shift autonomic tone in real time (Apollo Neuro, Sensate). This guide compares mechanisms, session protocols, and who should buy what first.
Read guideSupplementsMitochondrial Health Stack: The Complete Guide
Mitochondrial biohacking is a category, not one pill. CoQ10 supports electron transport, NAD+ precursors feed sirtuins and repair pathways, urolithin A may trigger mitophagy — this guide maps how they differ, typical doses, and the exercise-first hierarchy.
Read guideDiagnostics & TestingBone Density for Longevity: The Complete Guide
Bone is living tissue that responds to load. Osteoporosis and sarcopenia together drive falls, fractures, and loss of independence — the outcome Peter Attia calls 'the marginal decade.' This guide covers DEXA interpretation, resistance training, calcium/vitamin D/K2, and who needs medical treatment beyond lifestyle.
Read guideTools & EquipmentIndoor Air Quality: The Complete Guide
Indoor air is often 2–5× more polluted than outdoor — cooking, VOCs, dust, and wildfire smoke included. Longevity-focused people sleep 8 hours in one room; that room deserves a real filter. This guide covers PM2.5 health effects, purifier sizing, and how premium HEPA units compare.
Read guideTools & EquipmentCountertop Water Purifiers: The Complete Guide
Tap water quality varies by municipality; microplastics and PFAS are 2026 headline concerns. Countertop systems deliver filtered or reverse-osmosis water without a plumber. This guide compares RO vs gravity filters, maintenance, and Amazon-available models.
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Sleep OptimizationMelatonin for Sleep: The Complete Guide
Melatonin is a hormone, not a harmless supplement. Used correctly — low dose, short term, timed early — it helps jet lag and circadian shifts. Used nightly at high doses, it may disrupt natural production and sleep architecture. This guide separates appropriate use from default drugstore habits.
Read guideCognitive EnhancementMuse Meditation Headband: The Complete Guide
Muse is a consumer EEG headband that translates brain activity into weather sounds — guiding attention during meditation. It is not clinical neurofeedback, but it trains consistency. This guide covers how Muse works, who it helps, and how it fits next to free apps and prescription neurofeedback.
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Wearables & TrackersGlucose Spike Control: The Complete Guide
Glucose spikes after meals drive inflammation and metabolic stress — even in non-diabetics. CGM culture made this visible. This guide covers behavioral hacks (walk, fiber first, vinegar), when berberine fits, and how to use a monitor without ruining your relationship with food.
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Diagnostics & TestingGundry, Lectins & the Microbiome: The Complete Guide
Cardiac surgeon Steven Gundry built a massive following by linking lectins, leaky gut, and the microbiome to obesity and autoimmune disease. This guide explains his framework fairly, separates strong ideas from contested claims, includes practical recipes, and links his core books on Amazon.
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SupplementsDavid Sinclair & Longevity Science: The Complete Guide
Harvard geneticist David Sinclair changed public conversation with Lifespan (2019): aging as treatable, NAD+ and sirtuins as levers, fasting and cold as free drugs. This guide explains his research fairly, maps his personal stack, includes longevity-friendly recipes, and links Lifespan editions on Amazon.
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SupplementsWilliam Li & Eat to Beat: The Complete Guide
Physician-scientist William W. Li, MD, made angiogenesis — how the body grows and prunes blood vessels — a household idea with his TED talk and Eat to Beat Disease. This guide explains his five defense systems fairly, maps the 5×5×5 add-foods framework, includes practical recipes, and links his books on Amazon.
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SupplementsPeter Attia & Outlive: The Complete Guide
Peter Attia’s Outlive (2023) is the most useful popular longevity book of the decade: delay the Four Horsemen (atherosclerosis, cancer, neurodegeneration, metabolic disease) with exercise, lipids, sleep, and emotional health — not a supplement haul. This guide translates the book into a sequence you can actually run, and links the hardcover on Amazon.
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Sleep OptimizationMatthew Walker & Why We Sleep: The Complete Guide
Why We Sleep (2017) made short sleep feel like a public-health emergency. Matthew Walker is right that 7–9 hours, regularity, and darkness matter more than most supplements. Some statistics were later challenged. This guide keeps the useful protocol, flags the hype, and links the paperback on Amazon.
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Cognitive EnhancementJames Nestor & Breath: The Complete Guide
Breath (2020) made nasal breathing and mouth tape mainstream. James Nestor’s reporting is strongest on nitric oxide, sleep-disordered breathing, and the cost of chronic mouth breathing — looser on some anthropology. This guide turns the book into a two-week practice and links the hardcover plus tape and nasal strips.
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SupplementsResveratrol: The Complete Guide
Resveratrol is the grape-and-knotweed stilbene that made sirtuins famous. David Sinclair still discusses it; human outcome trials never matched the mouse headlines. This guide covers form (trans vs blends), dosing with fat, drug interactions, and who might still run a cheap labeled trial.
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SupplementsQuercetin: The Complete Guide
Quercetin is a flavonoid from onions and apples that shows up in senolytic stacks, seasonal-allergy protocols, and zinc-ionophore lore. Bioavailability is the product problem; bromelain pairings try to fix it. Human longevity outcomes are not established. This guide covers daily vs pulsed use and a labeled 1g option.
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SupplementsAstaxanthin: The Complete Guide
Astaxanthin is the pink carotenoid in salmon and Haematococcus algae. Human trials support modest skin and eye-fatigue benefits at 4–12mg daily; lifespan claims are marketing. Take it with fat, keep sunscreen, and treat it as a tier-2 antioxidant — not a foundation supplement.
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SupplementsGreen Tea, Matcha & EGCG: The Complete Guide
Green tea and matcha are the food form of EGCG — the catechin in countless metabolic and cancer-prevention papers. Observational and some intervention data support cardiometabolic benefits from cups, not 800mg extracts. High-dose EGCG capsules have rare liver-injury reports. Drink the leaf; be careful with pills.
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SupplementsExtra Virgin Olive Oil: The Complete Guide
Extra virgin olive oil is one of the few dietary fats with outcome-trial support when it replaces refined fats in a Mediterranean pattern. Phenols (oleocanthal, hydroxytyrosol) and oleic acid are the usual mechanisms. This guide covers how to buy, store, and cook with EVOO — and why ‘olive oil shots’ miss the point.
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Diagnostics & TestingGrip Strength & Longevity: The Complete Guide
Handgrip strength is one of the cheapest, best-replicated biomarkers of all-cause mortality and functional aging. It is a marker of whole-body muscle and neuromuscular integrity — not a magic hand muscle. This guide covers how to measure it, what ‘good’ looks like, and how farmers carries and dead hangs beat cheap squeeze rings as the only plan.
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Wearables & TrackersZone 5 & HIIT for Longevity: The Complete Guide
Zone 5 is near-maximal work — the session that actually moves VO₂ max once a Zone 2 base exists. Attia and endurance coaches usually prescribe one hard day a week, not daily HIIT classes. This guide covers 4×4s, shorter intervals, heart-rate vs RPE, and who should wait.
Read guideDiagnostics & TestingDEXA Scan for Longevity: The Complete Guide
Dual-energy X-ray absorptiometry is the clinical standard for bone mineral density and a useful whole-body composition test (lean mass, fat, visceral adipose). Attia and sports-medicine clinics use it as a periodic snapshot. This guide covers what to book, how to prepare, how often to repeat, and what to do with the PDF.
Read guideSleep OptimizationHuberman Sleep Stack: The Buying Guide
Andrew Huberman’s evening stack — magnesium, L-theanine, and apigenin, often with glycine — is the most copied supplement protocol on the internet. Evidence is strongest for magnesium and glycine, thinner for apigenin. This buying guide ranks what to purchase, in what order, and links Amazon-available SKUs we already review.
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SupplementsMichael Greger & How Not to Die: The Complete Guide
How Not to Die (2015) is NutritionFacts.org in hardcover: fifteen causes of death and the plant foods Greger wants on your plate. The Daily Dozen is the useful protocol. This guide separates strong diet-pattern evidence from ‘reverse disease with broccoli’ headlines and links the book plus olive oil, fiber, and matcha.
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Sleep OptimizationSatchin Panda & The Circadian Code: The Complete Guide
Satchin Panda’s Circadian Code made ‘when you eat’ as famous as ‘what you eat.’ The protocol is a consistent daytime eating window, morning outdoor light, and a dark evening — not a 16:8 religion. This guide maps the book onto our fasting and circadian pages and flags who should not compress meals.
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SupplementsValter Longo & The Longevity Diet: The Complete Guide
Valter Longo’s Longevity Diet is a mostly plant, pescatarian-leaning pattern plus periodic fasting-mimicking diet (FMD) cycles from his USC lab. This guide explains the everyday plate, the protein debate with Attia, and why a 5-day kit is not a weekend water fast. Hardcover linked on Amazon.
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SupplementsFiber & Psyllium: The Complete Guide
Most longevity stacks skip the cheapest metabolic lever: dietary fiber. Psyllium husk has actual outcome data for LDL and satiety. This guide covers food sources, titration, water, drug spacing, and a labeled capsule option — not orange drink mix.
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Tools & EquipmentFoam Rolling: The Complete Guide
Foam rolling is not fascia surgery. It is a cheap way to raise short-term range of motion and take the edge off soreness. This guide covers what the research supports, what to avoid (lumbar spine, acute injuries), and why the TriggerPoint GRID is the default Amazon roller.
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Sleep OptimizationIndoor Humidity for Sleep & Nasal Breathing: The Complete Guide
Dry winter air wrecks nasal breathing, mouth-tape nights, and skin. The target is roughly 40–50% relative humidity — not a steam room. This guide covers cheap hygrometers, the Levoit 300S-class humidifier, cleaning, and how humidity fits next to air purifiers.
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Sleep OptimizationWeighted Blankets for Sleep: The Complete Guide
Weighted blankets are a physical sleep experiment: deep pressure helps some anxious sleepers and overheats others. Evidence for insomnia is mixed. This buying guide covers the 10% heuristic, Gravity vs generics, and why hot sleepers should fix temperature first.
Read guideSupplementsBest Creatine: The Buying Guide
Creatine monohydrate is the rare supplement with decades of human data for strength, and growing interest in cognition and healthy aging. You do not need hydrochloride, buffered, or a $60 tub. This buying guide picks a tested monohydrate and tells you what to ignore.
Read guideSupplementsBest Magnesium: The Buying Guide
Magnesium is the first sleep-stack purchase that usually deserves to stay. Glycinate (bisglycinate) is the default for evenings; citrate if you also want a stool softener; threonate if you are paying extra for a cognition story. This buying guide maps forms to Amazon SKUs.
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SupplementsMedicinal Mushrooms: The Complete Guide
Functional mushrooms are a grocery-and-capsule category with uneven evidence. Lion’s mane has the most cognition chatter; reishi is the evening ‘calm’ mushroom; cordyceps is sold for VO₂. This guide tells you which single extracts are worth a trial and why mushroom-coffee blends usually underdose everything.
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Cognitive EnhancementCasey Means & Good Energy: The Complete Guide
Good Energy argues that most chronic disease is downstream of impaired cellular energy production. The useful core is cheap labs, walking, sleep, and real food — not a subscription CGM. This guide extracts the protocol and flags the company overlap.
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Cognitive EnhancementGlucose Revolution: The Complete Guide
Glucose Revolution popularized tactics that already existed in clinical nutrition: eat fiber and protein before starch, consider vinegar before a starchy meal, and walk for ten minutes after. This guide is the protocol without the branded powders.
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Cognitive EnhancementThe Obesity Code: The Complete Guide
The Obesity Code made intermittent fasting sound like endocrinology instead of willpower. The keepers are fewer snacks, fewer liquid sugars, and a daily eating window. The danger is fasting on glucose-lowering drugs without a clinician. This guide places Fung next to Longo and modern IF practice.
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SupplementsCurcumin & Turmeric: The Complete Guide
Curcumin is the labeled extract from turmeric with mixed human data for osteoarthritis symptoms and inflammation markers. Plain kitchen turmeric is a spice, not a trial dose. This guide covers bioavailability (fat + piperine), what the studies actually show, and a C3 Complex SKU that is not mystery powder.
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SupplementsVitamin C: The Complete Guide
Vitamin C is an essential cofactor for collagen and a water-soluble antioxidant. Deficiency is rare on mixed diets; megadoses do not buy lifespan. This guide covers food vs ascorbic acid, the cold literature, and when a cheap NOW capsule is rational next to collagen powder.
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Tools & EquipmentHydroxyapatite Toothpaste: The Complete Guide
Nano-hydroxyapatite is the enamel mineral in a tube. Trials support sensitivity relief and some remineralization. It is a legitimate fluoride alternative for adults who want one — not a purity contest. This guide covers how to use it, what it does not replace (floss, cleanings), and a Boka SKU that is actually on Amazon.
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Diagnostics & TestingHome Blood Pressure Monitoring: The Complete Guide
Home blood pressure is one of the highest-ROI longevity measurements you can own. Clinic readings are noisy; guidelines endorse HBPM for diagnosis and treatment decisions. This guide covers technique, validated upper-arm devices, and when to call a human instead of taking a fifth inflation.
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Sleep OptimizationWhite Noise for Sleep: The Complete Guide
Steady broadband noise can help when the problem is plumbing, traffic, or a partner — not apnea or 4pm espresso. A mechanical fan (Dohm) avoids looping-track fatigue. This guide covers how loud is too loud, why phones are a worse nightstand, and what white noise cannot fix.
Read guideSupplementsBest Omega-3: The Buying Guide
Omega-3 is a foundation supplement if you do not eat fatty fish twice a week. You want EPA+DHA in grams, not a 1,000mg ‘fish oil’ softgel that is mostly filler. This buying guide points at Nordic Naturals Ultimate Omega and tells you what to ignore.
Read guideSupplementsBest Vitamin D: The Buying Guide
Vitamin D shopping is easy once you have a 25(OH)D number. D3 (cholecalciferol) beats D2. 5,000 IU is a repletion-style softgel, not a forever default. This buying guide picks NOW D3 for cheap D-only and Thorne D3/K2 when you want both in one capsule.
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SupplementsMichael Greger & How Not to Age: The Complete Guide
How Not to Age (2023) is NutritionFacts.org aimed at hallmarks of aging: autophagy, senescent cells, AMPK, and centenarian patterns. The useful protocol is still plants, fiber, and skipping boutique serums. This guide extracts the grocery list and flags where ‘disrupt every pathway’ overreaches.
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Tools & EquipmentKelly Starrett & Built to Move: The Complete Guide
Built to Move (2023) is The Ready State for people who sit. Ten screens plus ten daily practices — breath, steps, range, sleep. This guide extracts the tests you will actually repeat and pairs the book with a foam roller and a walking habit.
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Tools & EquipmentMichael Easter & The Comfort Crisis: The Complete Guide
The Comfort Crisis (2021) is the popular case that climate-controlled, overfed life makes you fragile. The protocol that sticks is weighted walking plus outdoor time. This guide extracts the ruck practice and leaves the 33-day hunt as optional memoir.
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Diagnostics & TestingBenjamin Bikman & Why We Get Sick: The Complete Guide
Why We Get Sick (2020) is the mechanism book under a lot of metabolic Twitter. Bikman argues insulin resistance links diabetes, fatty liver, hypertension, and more. This guide extracts the labs and the boring plan — and tells you when to stay on the drugs you already have.
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SupplementsVitamin B12: The Complete Guide
Vitamin B12 is required for myelin, DNA synthesis, and homocysteine handling. Deficiency is a neuropathy and anemia problem — not a focus hack. This guide covers who needs a lozenge, what to test, and why NOW methyl 1,000 mcg is enough for most plant-based eaters.
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SupplementsInositol: The Complete Guide
Myo-inositol is a sugar alcohol involved in insulin signaling and some neurotransmitter pathways. Sleep-stack culture uses 1–2 g at night; PCOS clinics use grams with D-chiro. This guide separates those protocols and explains why a 500 mg NOW capsule is a trial bottle, not a fertility plan.
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Sleep OptimizationSunrise Alarm Clocks: The Complete Guide
A wake-up light ramps brightness before sound so you are not yanked out of deep sleep by a phone. It is a circadian cue, not a medical light box. This guide covers when the Philips HF3520 is worth it and when a walk outside beats another gadget.
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Tools & EquipmentShower Filters: The Complete Guide
An inline shower filter can cut chlorine smell and help dry skin and hair. It will not remove the need for a drinking-water filter and it will not fix eczema by itself. This guide covers what carbon/KDF housings actually do and when the AquaBliss SF100 is a rational renter SKU.
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SupplementsBest Protein Powder: The Buying Guide
Protein powder is a convenience layer on top of food, not a longevity molecule. Whey is the default if you tolerate dairy. Collagen is glycine and joints, not a complete muscle protein. This buying guide picks Optimum Nutrition whey and Vital Proteins collagen and tells you when to skip powder entirely.
Read guideSupplementsBest Collagen: The Buying Guide
Collagen peptides are a glycine-rich, incomplete protein with modest skin and joint trial data. Shopping is easy: hydrolyzed peptides that dissolve, not a $70 beauty tin. This buying guide picks Vital Proteins and tells you to keep vitamin C and a complete protein in the same kitchen.
Read guideSupplementsBest Probiotic: The Buying Guide
Most Amazon probiotic bottles are a CFU number and a mystery blend. Strain identity and published counts beat a 50-strain fireworks label. This buying guide picks Seed DS-01 as the biohacker default, tells you to eat fermented food anyway, and links the full probiotics guide for the science.
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SupplementsMichael Greger & How Not to Diet: The Complete Guide
How Not to Diet (2019) is NutritionFacts aimed at weight: calorie density, fiber, insulin index, and a long accelerator list. The useful protocol is still plants and fewer ultra-processed calories. This guide extracts the grocery move and flags where twenty-one levers become a personality.
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Cognitive EnhancementChristopher Palmer & Brain Energy: The Complete Guide
Brain Energy (2022) argues that psychiatric diagnoses share impaired brain energy metabolism. The useful move is metabolic labs, sleep, and food quality — not a DIY keto taper. This guide extracts the framework and draws a hard line at stopping prescribed medication.
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SupplementsWill Bulsiewicz & Fiber Fueled: The Complete Guide
Fiber Fueled (2020) is the GI case for feeding microbes a wide range of plants. The protocol is diversity and fiber, not a forever elimination diet. This guide extracts the 30-plant idea and pairs the book with psyllium and the probiotic buying guide.
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Diagnostics & TestingEric Topol & Super Agers: The Complete Guide
Super Agers (2025) is Topol’s case that aging well is mostly not dying of the four chronic killers — and that incretins, earlier prevention, and better data are the real 2020s story. This guide extracts the clinic frame and sends you to GLP-1, ApoB, and Attia instead of a new powder.
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SupplementsCitrulline: The Complete Guide
L-citrulline raises arginine and nitric oxide more reliably than oral arginine for many people. Training studies usually use grams, often as citrulline malate. This guide covers dose honesty and why NOW 750 mg capsules are a stim-free trial, not a pre-workout tub.
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SupplementsAlpha-Lipoic Acid: The Complete Guide
ALA is a mitochondrial cofactor that can recycle vitamins C and E and shows up in diabetic neuropathy and glucose conversations. Longevity evidence in healthy people is thin. This guide covers the 600 mg NOW bottle and the hypoglycemia warning if you already take diabetes drugs.
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SupplementsMethylfolate: The Complete Guide
Methylfolate (5-MTHF) is the active folate form. Most people eating greens do not need a 1,000 mcg tablet. This guide covers when Quatrefolic is rational, why high folate can mask B12 deficiency, and why a haplotype screenshot is not a protocol.
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Diagnostics & TestingPulse Oximeters at Home: The Complete Guide
A fingertip pulse oximeter estimates oxygen saturation and pulse in about ten seconds. It is a spot-check next to a home BP cuff — not a diagnosis, not a sleep-apnea test, and not permission to skip emergency care. This guide covers setup and the Zacurate 500DL as the cheap Amazon SKU.
Read guideSupplementsBest Ashwagandha: The Buying Guide
Ashwagandha shopping is extract theater. KSM-66 and Sensoril name the extract; Kion no longer lists a standalone ashwagandha SKU on getkion.com. NOW 450 mg is the Amazon bottle with a buy button. This buying guide picks NOW for checkout and tells you to stop at eight weeks if nothing changed.
Read guideSupplementsBest Electrolytes: The Buying Guide
Electrolyte shopping is sodium theater plus flavors. Sweaty training, sauna, and low-carb diets are the usual reasons to add salt — not a $40 ‘cellular hydration’ identity. This buying guide picks LMNT as the Amazon packet and sends you to the electrolytes guide for the physiology.
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Wearables & TrackersDaniel Lieberman & Exercised: The Complete Guide
Exercised (2021) is Lieberman’s evolutionary case that voluntary training is a modern invention. Humans evolved to walk, carry, and rest. This guide extracts the walking-first frame and sends you to Zone 2, Easter, and Starrett instead of a $4,000 treadmill.
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Diagnostics & TestingAndrew Steele & Ageless: The Complete Guide
Ageless (2021) is Steele’s civilian tour of aging as a biological target. Hallmarks, senescent cells, immune aging. This guide extracts the frame and sends you to Sinclair, Topol, and a physical — not a 12-bottle cart.
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Diagnostics & TestingRobert Lustig & Metabolical: The Complete Guide
Metabolical (2021) is Lustig’s case that chronic disease is more foodable than druggable. Two rules: protect the liver, feed the gut. This guide extracts those rules and sends you to Bikman, Fung, Means, and Fiber Fueled — not a keto-vs-vegan flame war.
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Wearables & TrackersHerman Pontzer & Burn: The Complete Guide
Burn (2021) is Pontzer’s Hadza-backed argument that 24-hour energy expenditure sits in a narrow band. More training does not linearly raise daily burn. This guide extracts the correction and sends you back to walking, Zone 2, and food — not a watch that ‘earned’ dessert.
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SupplementsTMG (Betaine): The Complete Guide
TMG (trimethylglycine, betaine anhydrous) donates methyl groups and shows up in homocysteine and liver-fat conversations. This guide covers the 1,000 mg NOW tablet and why folate and B12 are still the first methylation bottles — not a 15-supplement stack from a raw DNA file.
Read guideSupplementsBest NAC: The Buying Guide
NAC shopping is brand theater around one molecule. NOW 600 mg with selenium is the Amazon bulk bottle. Thorne 500 mg is the NSF-for-Sport upgrade. Oral glutathione stays a waste on this site. This buying guide picks NOW for checkout and tells you the black specks are oxidation.
Read guideSupplementsBest CoQ10: The Buying Guide
CoQ10 shopping is form theater. NOW 100 mg ubiquinone in oil is the Amazon volume bottle. Life Extension Super Ubiquinol is the reduced-form upgrade we already list. This buying guide picks NOW for a cheap trial and sends statin users over 40 to the full CoQ10 guide before they default to the cheapest quinone.
Read guideSupplementsBest Zinc: The Buying Guide
Zinc shopping is form and dose. Picolinate beats oxide. NOW 50 mg elemental is the cheap Amazon repletion capsule — it sits above the 40 mg/day adult upper limit, so it is not a forever daily. Thorne 15–30 mg NSF is the maintain bottle. This buying guide picks NOW for a short course and tells you to do the math with your multi.
Read guideSupplementsBest Berberine: The Buying Guide
Berberine shopping is milligrams and GI luck. NOW 400 mg HCl with MCT is the Amazon softgel. Thorne 500 mg is the NSF upgrade. Clinical meal-time totals are often 1,000–1,500 mg/day — count capsules. This buying guide picks NOW for a cheap trial and refuses the OTC-metformin story.
Read guideSupplementsBest Vitamin C: The Buying Guide
Vitamin C shopping is dose honesty. NOW C-1000 is the Amazon bottle already on this site. Food still covers most people. This buying guide picks NOW when you want a cheap tablet — especially next to collagen — and tells you 10 g powders and clinic IV drips are a different conversation.
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Diagnostics & TestingChris van Tulleken & Ultra-Processed People: The Complete Guide
Ultra-Processed People (2023) is physician Chris van Tulleken’s case that most modern calories are industrial formulations, not meals. He ate an 80% UPF month under observation. This guide extracts the shopping rule and sends you to Lustig, Guyenet, and Fiber Fueled — not a 30-day detox.
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Diagnostics & TestingStephan Guyenet & The Hungry Brain: The Complete Guide
The Hungry Brain is obesity researcher Stephan Guyenet on why ancient appetite circuits overeat modern food. The Amazon listing here is the Flatiron paperback (1250081203), not the 2017 hardcover. This guide pairs it with van Tulleken and Fung. It is not a macro war and not a GLP-1 stop card.
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Wearables & TrackersJohn Ratey & Spark: The Complete Guide
Spark (2008) is psychiatrist John Ratey’s case that aerobic work changes the brain: attention, mood, and memory. The Naperville school story is the famous chapter. This guide sends you to Zone 2 and Lieberman before another focus capsule. It is not permission to stop psychiatric medication.
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Diagnostics & TestingElizabeth Blackburn & The Telomere Effect: The Complete Guide
The Telomere Effect (2017) is Nobel laureate Elizabeth Blackburn and Elissa Epel on telomeres as a marker, with levers they actually defend: sleep, movement, food, and stress. This guide pairs it with Sinclair and Steele as the cautious chapter. It is not a shopping list for telomerase activators.
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Cognitive EnhancementAnna Lembke & Dopamine Nation: The Complete Guide
Dopamine Nation (2021) is Stanford psychiatrist Anna Lembke on how high-dopamine hits — drugs, ultra-processed food, the phone — tilt pleasure and pain. The practical chapter is a time-boxed break from one cue. Hardcover ASIN 152474672X is the US listing. This is not a detox stack and not permission to stop prescribed psychiatric medication.
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SupplementsSelenium: The Complete Guide
Selenium is required for glutathione enzymes and thyroid hormone conversion. The adult RDA is 55 mcg; the upper limit is 400 mcg a day from all sources. NOW’s 200 mcg L-selenomethionine is the Amazon capsule. One capsule plus a high-selenium multi plus Brazil nuts is how people overshoot. This is not a cancer protocol.
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Tools & EquipmentCO2 Monitors at Home: The Complete Guide
A real CO2 monitor uses NDIR to measure the carbon dioxide you exhale in a closed room. Around 1,000 ppm is a reason to open a window, not a medical result. Aranet4 Home (B07YY7BH2W) is the Amazon unit in the buy box. It does not detect carbon monoxide, smoke, or viruses. A HEPA still does the particle job.
Read guideDiagnostics & TestingBiological Age Tests: The Complete Guide
Biological-age tests are a 2026 longevity trend: a spit or blood kit returns a number that is supposed to be younger or older than your birthday. The clocks were trained on different targets, so two labs can disagree. A lower score does not prove you will live longer. Repeat the same assay if you repeat it at all, and change ApoB, blood pressure, muscle, and sleep before you buy a second kit.
Read guideDiagnostics & TestingKlotho and Follistatin: The Complete Guide
Klotho and follistatin are having a 2026 moment because podcasts describe them as gene therapy that does not edit your genome. Klotho is tied, in observational human data, to cognition. Follistatin can grow muscle in animals. That is not an approved longevity treatment, and it is not a reason to fly somewhere for an injection outside normal drug oversight. This page names the claim and the skip.
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Tools & EquipmentAI Health Advice: The Complete Guide
AI health interpretation is a 2026 biohacking trend: paste labs into a chatbot and get a protocol. The useful version is a question list for a clinician and a plain-language read of a number you already have. The bad version is a confident dose change, a fake citation, or a full medical record dropped into a tool you do not control. This guide is the boundary.
Read guideDiagnostics & TestingPerimenopause and Healthspan: The Complete Guide
Women-specific tracking is one of the faster 2026 wellness shifts, and perimenopause is the part with real biology behind it. Estrogen decline changes bone, muscle, sleep, and lipids. The durable work is lifting, protein, a DEXA when it is due, and a clinician for hormone therapy. A cycle app does not replace that, and this page does not dose hormones.
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Supplements“Natural GLP-1” Supplements: The Complete Guide
2026 marketing calls berberine, lemon flavonoids, and some collagen peptides ‘natural GLP-1.’ A few small trials show meal-time glucose or incretin shifts. None of them are a GLP-1 receptor agonist drug. They do not reproduce semaglutide’s weight-loss trials, and they are not a reason to stop a prescribed incretin. This page is the distinction.
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Sleep OptimizationNasal Strips: The Complete Guide
Breathe Right–style strips pull the nasal valve open from the outside. They are a same-night experiment for congestion and simple snoring, and the usual first add-on when mouth tape fails because you cannot get air through your nose. They do not treat obstructive sleep apnea.
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Tools & EquipmentWater Flossers: The Complete Guide
Gum inflammation is a longevity input people skip while buying NMN. A water flosser is the tool that gets used. The Waterpik Cordless Advanced (WP-580) is the Amazon default: ADA-accepted, rechargeable, three pressures. String floss still counts if you actually do it. Neither replaces a dentist.
Read guideSleep OptimizationSleep Masks: The Complete Guide
Light through the eyelids is a melatonin signal even when you are asleep. A mask that you keep on beats blackout curtains you never buy and blue-blockers you take off at the laptop. The Manta Sleep Mask is the Amazon default because the cups sit around the eyes instead of on them, which is why flat masks end up on the floor.
Read guideTools & EquipmentEMS Muscle Stimulation: The Complete Guide
EMS (electrical muscle stimulation) makes a muscle contract with a pad. That is different from a massage gun (mechanical), Normatec (compression), and PEMF (a magnetic field you do not contract against). The Compex Sport Elite is the high-ticket Amazon unit with recovery, warm-up, and strength programs. It is an add-on after you can already squat, sleep, and eat protein.
Read guideDiagnostics & TestingBalance and Fall Prevention: The Complete Guide
Falls are how a lot of healthspan actually ends: fracture, immobility, then everything else. Balance is trainable and it moves faster than a DEXA score. This guide is single-leg stance, lower-body strength, grip, and when dizziness is a clinician problem. A Captain of Crush gripper is optional. A clear floor is not.
Read guideSupplementsAlcohol and Longevity: The Complete Guide
Alcohol is the longevity leak that survives every supplement stack. It fragments sleep, raises blood pressure and triglycerides, and increases the risk of several cancers as intake goes up. A glass of red wine is not a protocol. If you drink, fewer drinks is the change that shows up in sleep and labs. Dependence is medical care, not a biohack week.
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