There are two basic types of sleep: REM sleep and NREM sleep.

Name: There are two basic types of sleep: REM sleep and NREM sleep.
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REM (Rapid Eye Movement) sleep and NREM (Non-Rapid Eye Movement) sleep are the two basic types of sleep. REM sleep is characterized by rapid eye movements, vivid dreams, and muscle paralysis, while NREM sleep is divided into four stages and is characterized by slower brain waves, limited muscle activity, and occasional dreaming.

There Are Two Basic Types of Sleep: REM Sleep and NREM