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Which term means lying flat on the back?
Brain Activity
The functioning of the brain involving complex processes signaled by electrical impulses and chemical neurotransmitters.
REM Sleep
A phase of sleep characterized by Rapid Eye Movement, during which dreaming often occurs and brain activity increases.
Dreaming
A series of thoughts, images, or emotions occurring during sleep, especially during REM sleep phases.
Restorative Theory
A theory proposing that sleep is necessary for the body to repair and rejuvenate itself.
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