During a night of sleep, when does REM sleep occur?
A. In one long episode at the beginning of the night
B. In one long episode at the end of the night
C. In about four to six episodes distributed across the night’s sleep
D. In two long episodes, one at the beginning and one at the end of the night
Answer:C
During a night of sleep, when does REM sleep occur?
A. In one long episode at the beginning of the night B. In one long episode at the end of the night C. In about four to six episodes distributed across the night’s sleep D. In two long episodes, one at the beginning and one at the end of the night