Caffeine Cutoff — 60-Second Protocol

19s · captions burned in · sound on

biohack · 2026-08-08

Last coffee of the day — and it's early.

No caffeine within 8 hours of intended sleep time. Caffeine half-life is 5–6 h in most adults, so an afternoon coffee still occupies adenosine receptors at bedtime. Cutting it cleanly is the highest-yield sleep hack for habitual coffee drinkers.

Evidence: high sleep quality deep-sleep amount REM sleep

The protocol

Ruleno caffeine within 8 h of bedtime
Includescoffee · matcha · energy drinks · pre-workout · dark chocolate (>50g)

No medical contraindications — comfort-only adjustment.

Full transcript

Last coffee of the day — and it's early. Caffeine has a six-to-eight-hour half-life, so that afternoon cup is still in your system at bedtime, quietly fragmenting your deep sleep even if you fall asleep fine. Cut caffeine eight hours before bed and protect the sleep you're not even aware you're losing. More protocols like this on agegen.ai. Generate your prime age!

Sources

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Educational content, not medical advice. Talk to a licensed clinician before changing how you treat a health condition.