Which of these statements about sleep is TRUE?
A)Non-rapid eye movement (NREM)sleep is the most restorative.
B)Rapid eye movement sleep (REM)lasts about 15 minutes.
C)About 75% of sleep is NREM sleep.
D)REM sleep is the time of least brain wave activity.

Question

Quizplus · Accepted Answer

A sleep cycle is usually 70 to 90 minutes in duration,and the typical sleep passes through four to six cycles during a 7- to 8-hour sleep period.The NREM and REM periods of sleep change as the overall sleep period continues and the person becomes more relaxed and reenergized.About 75% of sleep is NREM sleep.

Which of These Statements About Sleep Is TRUE