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  2. Is 4 hours of sleep enough? What sleeping too little does to ...

    www.aol.com/news/4-hours-sleep-enough-sleeping...

    Is 4 hours of sleep enough? Experts explain what happens to your body when you sleep four hours, health effects of sleep deprivation and tips to improve sleep.

  3. Jay Leno Explains Why He Only Sleeps 4 Hours a Night: 'I'm ...

    www.aol.com/jay-leno-explains-why-only-183204136...

    "Now I'm reading for three and a half hours before I have to do anything. That's not working. So I just went back to my old way of going to bed at 2 or 2:30 and then waking up at 7:30 or 8:00."

  4. Add These 10 Practices to Your Routine for Better Sleep - AOL

    www.aol.com/add-10-practices-routine-better...

    Lose Your Senses. Our bedrooms should be dark, quiet and cool for the best night’s sleep, says Dr. Roban. She suggests using ear plugs or white noise to block out external noise; black out ...

  5. Polyphasic sleep - Wikipedia

    en.wikipedia.org/wiki/Polyphasic_sleep

    Polyphasic sleep is the practice of sleeping during multiple periods over the course of 24 hours, in contrast to monophasic sleep, which is one period of sleep within 24 hours. Biphasic (or diphasic , bifurcated , or bimodal ) sleep refers to two periods, while polyphasic usually means more than two. [ 1 ]

  6. Microsleep - Wikipedia

    en.wikipedia.org/wiki/Microsleep

    According to one Centers for Disease Control and Prevention (CDC) study, among 74,571 adult respondents in 12 U.S. states, 35.3% reported <7 hours of sleep during a typical 24-hour period, 48.0% reported snoring, 37.9% reported unintentionally falling asleep during the day at least once in the preceding month, and 4.7% reported nodding off or ...

  7. Rapid eye movement sleep behavior disorder - Wikipedia

    en.wikipedia.org/wiki/Rapid_eye_movement_sleep...

    RBD is a sleep disorder characterized by the loss of normal skeletal muscle atonia during REM sleep and is associated with prominent motor activity and vivid dreaming. [6] [2] These dreams often involve screaming, shouting, laughing, crying, arm flailing, kicking, punching, choking, and jumping out of bed.