Question

question 6 of 10
which stage of sleep usually comes before rem sleep?

a. stage 2

b. stage 4

c. stage 3

d. stage 1

Explanation:

In the sleep cycle, the typical progression is Stage 1 → Stage 2 → Stage 3 → Stage 4 → REM sleep (and then the cycle repeats, with changes in later cycles). So Stage 4 (also part of deep sleep or slow - wave sleep) usually comes before REM sleep. Stage 1 is the initial light sleep stage, Stage 2 is a deeper light sleep, and Stage 3 is part of the transition to deep sleep, but Stage 4 is the last non - REM deep sleep stage before REM begins in a typical first - cycle progression.

Answer:

B. Stage 4