Alcoholics may spend a good deal of time sleeping, but their sleep is not refreshing because they
A) wake up many times during a single sleep cycle.
B) spend less time in REM sleep.
C) spend less time in NREM sleep.
D) spend too much time in stage 4 sleep.

Question

Quizplus · Accepted Answer

Alcohol can disrupt the normal sleep cycle, reducing the amount of REM sleep experienced. REM sleep is important for restoring and refreshing the brain, so a reduction in this stage can make sleep less restful. Additionally, alcohol can cause frequent awakenings during the night, which can further disrupt sleep.

Alcoholics May Spend a Good Deal of Time Sleeping, but Their