How many hours of sleep do adults need?

Most adults do well with 7–9 hours per night. Quality matters as much as quantity — waking rested is a better indicator than a clock number.

Sleep

Sleep is one of the strongest levers on stress, mood, and cognition. This library covers the fundamentals of sleep hygiene, wind-down rituals, and small changes that many people find make the biggest difference.

Articles

Sleep · June 10, 2026 · 3 min read

Sleep Hygiene: A Practical Guide to Better Nights

What sleep hygiene actually means, which habits matter most, and how to build a wind-down routine you'll keep.

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Related tools

4-7-8 breathing

A gentle wind-down technique.

Daily check-in

Track sleep hours and quality.

Frequently asked

How many hours of sleep do adults need?: Most adults do well with 7–9 hours per night. Quality matters as much as quantity — waking rested is a better indicator than a clock number.