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  2. Is Waking Up in the Middle of the Night Normal? Here's What ...

    www.aol.com/waking-middle-night-normal-heres...

    “It’s actually normal to wake up several times per night, but awakenings need to be more than three to five minutes long to be remembered the following day,” says Dr. Audrey Wells, MD, a ...

  3. Waking at the same time each night reveals details ... - AOL

    www.aol.com/2016-07-14-waking-at-the-same-time...

    We get into a pattern of waking and sleeping that sees us opening our eyes in the middle of the night. The room is dark, but sure enough, the clock reads the same time as it did the night before...

  4. How to Get Back to Sleep After Waking Up at Night - AOL

    www.aol.com/back-sleep-waking-night-160332950.html

    Pay attention to whether any of these are waking you up at night, and make adjustments accordingly. For example, if you always wake up because the sun peeks in at 5 a.m., hang up blackout curtains.

  5. Sleep - Wikipedia

    en.wikipedia.org/wiki/Sleep

    The primary difference appears to be that pre-light cultures have more broken-up sleep patterns. For example, people without artificial light might go to sleep far sooner after the sun sets, but then wake up several times throughout the night, punctuating their sleep with periods of wakefulness, perhaps lasting several hours. [140]

  6. 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]

  7. Neuroscience of sleep - Wikipedia

    en.wikipedia.org/wiki/Neuroscience_of_sleep

    [93] [94] Of course, unlike in the flip-flop, in the case of sleep, there seems to be a timer ticking away from the minute of waking so that after a certain period one must sleep, and in such a case even waking becomes an unstable state. The reverse may also be true to a lesser extent.

  8. 7 Ways to Improve Your "Sleep Hygiene" & Get a Good Night's Rest

    www.aol.com/7-ways-improve-sleep-hygiene...

    Lack of sleep can make it hard to concentrate, remember things, and make good choices. It even leaves you at a higher risk of accidents (like at work or on the road). Higher risk of chronic ...

  9. Middle-of-the-night insomnia - Wikipedia

    en.wikipedia.org/wiki/Middle-of-the-night_insomnia

    Middle-of-the-night insomnia (MOTN), also called terminal Insomnia is characterized by having difficulty returning to sleep after waking up during the night or very early in the morning. This kind of insomnia (sleeplessness) is different from initial or sleep-onset insomnia, which consists of having difficulty falling asleep at the beginning of ...