SLEEP SIGNAL

Sleep Stages Explained

Sleep is not one uniform state; the body cycles through stages in a predictable pattern across the night.

What to know

Healthy sleep is broader than any single ingredient or metric. Sleep affects how people feel and function, and persistent sleep problems can deserve professional evaluation.

Use this information carefully

This guide is educational, not medical advice. Individual needs, medications and health conditions can change what is appropriate.

Keep learning

Explore sleep hygiene, sleep stages, and our sleep supplements guide.

Health note: This content is educational and not medical advice. Talk with an appropriate health professional about persistent sleep problems or supplement use, especially if you have a health condition or take medication.