Question 99 of 433
Is it true that a regular schedule matters as much as the hours?
The short answer
Yes. Going to bed and waking at consistent times may predict longevity as well as total hours.
A 2024 study of about 60,000 people wearing activity trackers found that those with the most regular sleep had a 20 to 48 percent lower risk of death than those with the most irregular sleep. Your body runs on clocks. Dr. Satchin Panda’s The Circadian Code explains how nearly every organ keeps time. The practical step is simple: wake up at the same time every day, including weekends, and get outside light within the first hour.
“This book is for education. It is not medical advice, and reading it does not make you my patient or create a doctor-patient relationship.” From the book’s medical disclaimer. Full disclaimer
OBSERVATIONAL — Adults with wearable data: sleep regularity predicts mortality; residual confounding is possible.Evidence grade (draft mapping)CObservationalPart 7, Q99 · Part sources
From Longevity Unmasked by Afshine Ash Emrani, MD, FACC. Medical disclaimer. This book is for education. It is not medical advice, and reading it does not make you my patient or create a doctor-patient relationship. Nothing here is meant to diagnose, treat, cure, or prevent any disease. Medicine is personal: a test, drug, supplement, or exercise plan that helps one person can harm another. Do not start, stop, or change any medication or treatment because of something you read in these pages. Talk with a licensed clinician who knows your history first. If you think you are having a medical emergency, call 911. The author disclaims responsibility for any loss or harm arising from use of the information in this book.