Longevindex

Topic

Sleep Optimization

Sleep masks, mouth tape, cooling systems, and protocols for deep restorative sleep.

Guides

Sleep Optimization: The Complete Guide
Sleep Optimization
20 min readDeep dive

Sleep 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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Apigenin for Sleep: The Complete Guide
Sleep Optimization
9 min readDeep dive

Apigenin 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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Glycine for Sleep: The Complete Guide
Sleep Optimization
10 min readDeep dive

Glycine 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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Circadian Rhythm Optimization: The Complete Guide
Sleep Optimization
14 min readDeep dive

Circadian 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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Blue Light Blocking: The Complete Guide
Sleep Optimization
10 min readDeep dive

Blue 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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Mouth Tape & Nasal Breathing: The Complete Guide
Sleep Optimization
10 min readDeep dive

Mouth 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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Sleep Cooling: Mattresses, Pads & Temperature Protocols
Sleep Optimization
12 min readDeep dive

Sleep 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.

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Referenced Equipment

Equipment from our guides, with specs and trusted purchase links.