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

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    Everyone needs sleep, but getting enough isn't always easy. Many Americans regularly sleep less than the recommended amount, and everyone has the occasional sleepless night.

  3. 7 Ways to Improve Your "Sleep Hygiene" & Get a Good ... - AOL

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    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 diseases .

  4. 5 sleep tips to get better rest during the busy holiday season

    www.aol.com/5-sleep-tips-better-rest-093035134.html

    Getting a good night's sleep can be a little more challenging amid the hype of the holidays. With changes in routine, diet and potentially time zones, quality sleep could be difficult to come by ...

  5. Hypnogram - Wikipedia

    en.wikipedia.org/wiki/Hypnogram

    The number of hours of sleep is variable, however the proportion of sleep spent in a particular stage remains mostly consistent; healthy adults normally spend 20–25% of their sleep in REM sleep. [5] During rest following a sleep-deprived state, there is a period of rebound sleep which has longer and deeper episodes of SWS to make up for the ...

  6. Sleep hygiene - Wikipedia

    en.wikipedia.org/wiki/Sleep_hygiene

    Sleep hygiene is a behavioral and environmental practice [2] developed in the late 1970s as a method to help people with mild to moderate insomnia. [2] Clinicians assess the sleep hygiene of people with insomnia and other conditions, such as depression, and offer recommendations based on the assessment.

  7. Nap - Wikipedia

    en.wikipedia.org/wiki/Nap

    This is an accepted version of this page This is the latest accepted revision, reviewed on 11 December 2024. Short period of sleep during typical waking hours For other uses, see Nap (disambiguation). A man napping in a hammock, on a patio in Costa Rica A nap is a short period of sleep, typically taken during daytime hours as an adjunct to the usual nocturnal sleep period. Naps are most often ...

  8. What Is Deep Sleep? Understanding the 4 Sleep Cycles & Why ...

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    Most people get around 1.5 to two hours of slow-wave sleep if they get eight hours of shut-eye. This stage is key to waking up refreshed and ready for the day — and it’s what you’re hoping ...

  9. 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 ]