Some people get less REM sleep than normal because of their schedules. Once these people are able to sleep on a normal schedule again, what happens to their REM cycles?
a) they have more REM
b) they have no REM for a while
c) it combines with stage 4 sleep
d) they have less REM
You go through REM and NREM stages every 90 minutes or so on average, so that would mean they would get more REM since they do not have as much REM sleep with their shorter schedules, so the answer is A.
