One-hour bedtime window linked to longer life, study finds
TL;DR Summary
A large-scale analysis of 105,000 people over 47 million nights found that consistently going to bed within a one-hour window and sleeping at least seven hours five days a week is associated with roughly 2–4 extra years of life and a 24% lower mortality risk. Experts call the 7:1 sleep rule a practical, low-cost longevity strategy and advise pairing regular bed and wake times with a wind‑down routine and a sleep-friendly environment to maximize quality and circadian stability.
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