REM sleep lasts longest during which part of a night's sleep?

Name: REM sleep lasts longest during which part of a night's sleep?
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Question

Quizplus · Accepted Answer

REM sleep typically occurs in cycles throughout the night, with each cycle lasting approximately 90 minutes. As the night progresses, these cycles tend to become longer, meaning the period of time spent in REM sleep increases as well. Therefore, REM sleep lasts longest toward the end of the night's sleep (choice D).

REM Sleep Lasts Longest During Which Part of a Night's