AP PSYCHOLOGY

Detailed explanation-1: -The correct answer is c. increased voluntary muscle movement. Instead, the body becomes nearly immobile. The other answers do in fact occur in REM sleep.

Detailed explanation-2: -Rapid eye movement sleep, also known as REM sleep, is the third stage in your sleep cycle. It’s characterized by small, variable-speed brain waves, rapid eye movements, increased heart rate, and muscle paralysis.

Detailed explanation-3: -During non-REM sleep (about 80% of an adult’s sleeping time), you breathe slowly and regularly. But during REM sleep, your breathing rate goes up again. That’s the time we typically dream. Breathing also becomes more shallow and less regular during this sleep phase.