What is sleep?

What is sleep?

Sleep is a natural state where the brain and body rest and recover from the stresses of the day. Sleep consists of different stages, such as REM sleep and deep sleep. In REM sleep, the brain is more active and dreams are more frequent, while deep sleep is deep rest of the body and mind. Sleep is an important part of health and well-being, and its lack can cause many harmful effects on the body and mind.

Sources: Uniliitto