On an average, each complete cycle through the stages of NREM sleep and REM sleep lasts about:
A)20 minutes.
B)1 hour.
C)90 minutes.
D)8 hours.

Question

Quizplus · Accepted Answer

Each complete cycle through the stages of NREM sleep and REM sleep lasts approximately 90 minutes. This cycle is repeated multiple times throughout the night, with the length of each stage varying throughout the cycles.

On an Average, Each Complete Cycle Through the Stages of NREM