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Learn about REM sleep , a unique phase of sleep in mammals and birds characterized by eye movements, low muscle tone and vivid dreams. Find out how REM sleep is regulated by the brain stem, how it differs from non- REM sleep , and what happens during REM deprivation. During non-REM sleep , your brain is not as active. And in the deeper stages of non-REM sleep , your breathing slows down, and your blood pressure drops. After you fall asleep, non-REM sleep comes ... Discover why REM sleep is essential for memory, emotional regulation, and overall well-being, and learn how to improve your sleep quality. Sleep is essential to health, and deep sleep is the most important of all for feeling rested and staying healthy. Find out how much you should get each night.
