Sleep Hygiene Basics: Schedule, Light, Caffeine and Alcohol
A consistent schedule, a cool dark room, no late caffeine or alcohol, and morning light are the sleep habits with the best evidence. What each one does, and when to see a clinician.
Sleep optimization
Sleep Tracker Accuracy: Trust Total Sleep and Doubt the Stages
Your wearable confidently reports last night's deep sleep down to the minute, but the gap between that number and laboratory polysomnography is wider than the app lets on — here is how to read your data honestly.
Cool Bedroom for Deeper Sleep: Why Core Temperature Has to Drop
Falling asleep depends on your body shedding heat, and a cool room is one of the few sleep interventions with consistent, mechanistically clear support — here is how to dial it in.
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