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Andrea has just truly fallen all the way asleep during a nap when her roommate wakes her up for their geology exam. Andrea wakes up quickly and easily. Based on this information, Andrea was most likely in ______ sleep.

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Answer:

NREM-2

Explanation:

There are two types of sleep:

REM (Rapid Eye Movement) Sleep

NREM (Non-Rapid Eye Movement) Sleep

NREM is divided into four stages

In the second stage the sleep is light where there is spontaneous muscle contraction and relaxation. The body temperature and heart rate starts to lower. It is the stage before entering deep sleep.

Here, Andrea got up quickly and easily indicating she was in light sleep.

Hence, the type of sleep she was in is NREM-2