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  2. Do you really need 8 hours of sleep every night? Sleep ... - AOL

    www.aol.com/news/really-8-hours-sleep-every...

    Healthy adults need to sleep at least seven hours a night on a regular basis for optimal health, according to the American Academy of Sleep Medicine. So for most people, eight hours is enough. So ...

  3. The Truth About Whether 7 Hours of Sleep Is Enough ... - AOL

    www.aol.com/truth-whether-7-hours-sleep...

    "Optimal sleep is important because getting the right number of hours of sleep ensures good sleep architecture and healthy patterns for staying and falling asleep," says Dr. Alex Dimitriu, MD, a ...

  4. Is 7 hours of sleep a night enough? Sleep doctors weigh in - AOL

    www.aol.com/news/7-hours-sleep-night-enough...

    Experts discuss how much sleep people need, the health consequences of sleep deprivation, and how to sleep more. Is 7 hours of sleep a night enough? Sleep doctors weigh in

  5. Sleep efficiency - Wikipedia

    en.wikipedia.org/wiki/Sleep_efficiency

    Sleep efficiency (SE) is the ratio between the time a person spends asleep, and the total time dedicated to sleep (i.e. both sleeping and attempting to fall asleep or fall back asleep). It is given as a percentage. [1] SE of 80% or more is considered normal/healthy with most young healthy adults displaying SE above 90%.

  6. Sleep deprivation - Wikipedia

    en.wikipedia.org/wiki/Sleep_deprivation

    The study concluded that people with a broadband connection tend to sleep 25 minutes less than those without a broadband connection; hence, they are less likely to get the scientifically recommended 7–9 hours of sleep. [158] Another study conducted on 435 non-medical staff at King Saud University Medical City reported that 9 out of 10 of the ...

  7. Hypnogram - Wikipedia

    en.wikipedia.org/wiki/Hypnogram

    Cycles of REM and non-REM stages make up sleep. A normal healthy adult requires 7–9 hours of sleep per night. 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]

  8. Is 5 hours of sleep at night enough? - AOL

    www.aol.com/news/5-hours-sleep-night-enough...

    Is five hours of sleep enough? Doctors explain how much sleep you need, quality sleep basics, health effects of sleeping 5 hours and tips for better sleep.

  9. National Sleep Foundation - Wikipedia

    en.wikipedia.org/wiki/National_Sleep_Foundation

    NSF Sleep Duration Recommendations Chart developed based on NSF's research paper [3] In 2015 NSF released the results of a research study on sleep duration recommendations. [4] The paper titled "National Sleep Foundation's sleep time duration recommendations: methodology and results summary" was published in the peer-reviewed Sleep Health ...