asked 70.0k views
4 votes
How many of the five stages of sleep are considered NREM sleep?

one
two
three
four

2 Answers

6 votes
D is the final answer :)
answered
User Heisian
by
9.0k points
5 votes
Four because the fifth stage is REM sleep. The rest are NREM, or Non-REM.
answered
User Alexander Taran
by
7.7k points
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