Wake up time roxy the hobo3/22/2023 During REM sleep, your brain is most active, dreams occur, and your eyes move back and forth rapidly under your eyelids. This final stage takes up about 25 percent of your sleep cycle. During this deepest and most restorative sleep stage, breathing slows, blood pressure drops, muscles relax, hormones are released, healing occurs, and your body becomes re-energized. Your body temperature drops slightly, and your breathing and heart rate become regular. The onset of sleep begins at this stage, as you become unaware of your surroundings. This first stage of sleep marks the period between being awake and falling asleep. The stages used to be classified as stages 1, 2, 3, 4, and REM.
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