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Guide

The sleep health guide

Sleep is when the body repairs itself and the brain sorts what it learned during the day. Most adults need seven to nine hours, and how well you sleep matters as much as how long.

This guide starts with how sleep works, then covers the habits, food and bedroom setup that help, and the disorders that need a doctor. Nothing here replaces medical advice; if a sleep problem persists, talk to your doctor.

How sleep works

Education and research on sleep itself.

61 articles

Healthy sleep habits

Routines, positions and everyday questions.

33 articles