Sleep Regularity vs Duration: Why Consistency May Matter More
A large wearable study found sleep regularity predicts mortality better than sleep duration. Why keeping a consistent schedule...
Longevity & Supplement Guides
Evidence-scored guides to supplements, biomarkers, and daily protocols. Written the way we score our products: honestly.
Showing 5 guides tagged “Sleep”.
Caffeine and Sleep: Why the Afternoon Cup Matters
Caffeine masks tiredness rather than removing it, and with a 5–6 hour half-life an afternoon coffee can still...
Sleep Stages Explained: Light, Deep, and REM
Sleep is a structured cycle of light, deep and REM stages, each doing different work — deep sleep...
Circadian Rhythm: How Light Sets Your Body Clock
Your body runs on a clock that expects a regular day, and light is the signal that sets...
Sleep Is a Cooling Problem: The Case for a Colder Bedroom
Air conditioning built modern Singapore. The same physics runs your night. Why your core has to cool to...