R.E.M.sleep comprises approximately ____ percent of total sleep time every night.

Question

Quizplus · Accepted Answer

The normal adult sleep cycle lasts around 90 minutes and during this time, a person goes through 5 stages of sleep. Stage 1 is a transition period, stages 2, 3 and 4 are deep sleep stages, and stage 5 is REM sleep. Normally, about 50% of a person's total sleep time is spent in stage 2, 20% in REM sleep, and the remaining 30% is divided among the other stages. Therefore, option B stating that REM sleep comprises approximately 20% of total sleep time is correct.

REMSleep Comprises Approximately ____ Percent of Total Sleep Time Every