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Andrews [41]
3 years ago
7

Sleep research define our sleep stage in terms of

Health
1 answer:
Alex17521 [72]3 years ago
7 0

Answer:

There are five stages of sleep during the sleep cycle.

Scientists categorized the stages of sleep based on the characteristics of the brain and body during sleep. Stage 1,2,3, and 4, are categorized as 'non-REM sleep', and the fifth stage, is REM sleep.

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