3 years ago

The brain is most active during which portion of each sleep cycle?

2 answers:

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<span>It is during the stage where rapid eye movement begins in sleep where dreams begin. During this period, as brain activity increases so does their respiration rate. Even though the brain and other systems are lively, the muscles continue to be calm. This happens for around fifteen to twenty minutes.</span>

seraphim [82]3 years ago

5 0

Answer:

Explanation:

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