What happens when we sleep, and why we need just the right amount

Why do adults need 7 to 9 hours of sleep each night and why do kids need more? Experts explain what happens while we sleep – and what doesn't when we cut sleep short.

Brain BIO5 Institute

StartSchoolLaterOhio (@SSLOhio) / X

Why We Sleep (Plus What Happens In the Brain and Body When We Do

Recommended Hours of Sleep by Age Chart

5 Stages of Sleep: Psychology, Cycle & Sequence

Health – Page 65 – Macomb Daily

The University of Arizona Health Sciences

How Much Deep, Light and REM Sleep Do You Need?

What happens when we sleep, and why we need just the right amount each night

Quantity Sleep Review

How Much Sleep Do I Need? Recommended Sleep Times for Every Age