REM sleep is greatest in the first sleep cycle and dissipates over the sleep period. This statement is:

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Multiple Choice

REM sleep is greatest in the first sleep cycle and dissipates over the sleep period. This statement is:

REM sleep increases in duration as the night progresses, with the longest REM periods occurring in the later sleep cycles. The first REM period is relatively brief, often only a few minutes, while subsequent cycles feature longer REM intervals—sometimes 15–60 minutes—toward the end of the night. Because of this pattern, the statement that REM sleep is greatest in the first sleep cycle and dissipates over the sleep period is not accurate. Total REM time is typically about a quarter of sleep in healthy adults, though it can vary with age and individual factors.

REM sleep increases in duration as the night progresses, with the longest REM periods occurring in the later sleep cycles. The first REM period is relatively brief, often only a few minutes, while subsequent cycles feature longer REM intervals—sometimes 15–60 minutes—toward the end of the night. Because of this pattern, the statement that REM sleep is greatest in the first sleep cycle and dissipates over the sleep period is not accurate. Total REM time is typically about a quarter of sleep in healthy adults, though it can vary with age and individual factors.

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