The brain and other physiological functions are almost as active during REM sleep as in the waking state.This phase of sleep is described as ____.

Name: The brain and other physiological functions are almost as active during REM sleep as in the waking state.This phase of sleep is described as ____.
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REM sleep is often referred to as paradoxical sleep because, despite the brain and body's active state, the muscles are in a state of paralysis not present during other sleep phases or the waking state.

The Brain and Other Physiological Functions Are Almost as Active