REM sleep hypnotic sensation non-REM sleep 3 sleep muscle tension.
A lot is going on in your body while you sleep. Once in ZZZ, you alternate between REM and non-REM sleep. REM stands for Rapid Eye Movement.
During REM sleep, the eyes move rapidly in different directions, but no visual information is sent to the brain. This does not occur during non-REM sleep. NREM sleep comes first, followed by short periods of REM sleep, and then the cycle begins again.
Dreams are usually seen during REM sleep. During REM sleep, the brain is active, so you can have intense dreams.
Therefore, REM is important because it stimulates areas of the brain that aid learning and is associated with increased protein production. Babies can spend up to 50% of their sleep in the REM phase, while adults only have about 20%.
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