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  2. Insomnia - Wikipedia

    en.wikipedia.org/wiki/Insomnia

    Early-morning awakening with inability to return to sleep. In addition: The sleep disturbance causes clinically significant distress or impairment in social, occupational, educational, academic, behavioral, or other important areas of functioning. The sleep difficulty occurs at least three nights per week.

  3. Sleep deprivation - Wikipedia

    en.wikipedia.org/wiki/Sleep_deprivation

    Sleep deprivation, also known as sleep insufficiency [2] or sleeplessness, is the condition of not having adequate duration and/or quality of sleep to support decent alertness, performance, and health. It can be either chronic or acute and may vary widely in severity.

  4. Excessive daytime sleepiness - Wikipedia

    en.wikipedia.org/wiki/Excessive_daytime_sleepiness

    Excessive daytime sleepiness (EDS) is characterized by persistent sleepiness and often a general lack of energy, even during the day after apparently adequate or even prolonged nighttime sleep. EDS can be considered as a broad condition encompassing several sleep disorders where increased sleep is a symptom, or as a symptom of another ...

  5. This Is the Real Reason We Need Sleep - AOL

    www.aol.com/news/why-sleep-blame-fragile-dna...

    The theories for why animals sleep range from energy conservation, to helping our brains store memories and new information, to being an evolved behavior that keeps us from venturing out into the ...

  6. Effects of sleep deprivation on cognitive performance

    en.wikipedia.org/wiki/Effects_of_sleep...

    Inability to avoid attending to irrelevant events may also be induced by sleep-deprivation. [ 13 ] By contrast, other studies have indicated that the effects of sleep deprivation on cognitive performance, specifically sustained visual attention, are more global and bilateral in nature (as opposed to more lateralized deficit explanations).

  7. World Sleep Day raises awareness of the importance of sleep ...

    www.aol.com/world-sleep-day-raises-awareness...

    What can you do to improve your sleep this World Sleep Day? Only 16% of people in a new global survey say they get a good night's sleep each night of the week. Japan, the U.K.,

  8. Delayed sleep phase disorder - Wikipedia

    en.wikipedia.org/wiki/Delayed_sleep_phase_disorder

    Occasional noncircadian days may occur (i.e., sleep is "skipped" for an entire day and night plus some portion of the following day), followed by a sleep period lasting 12 to 18 hours. The symptoms do not meet the criteria for any other sleep disorder causing inability to initiate sleep or excessive sleepiness.

  9. Sleep deprivation in higher education - Wikipedia

    en.wikipedia.org/wiki/Sleep_deprivation_in...

    While sleep quantity is important, good sleep quality is also essential to avoid sleep disorders. [6] The term sleep deprivation can be defined as having a lack of sleep that does not support daytime awareness. [7] In most literature, sleep deprivation is further categorized into either acute sleep deprivation or chronic partial sleep deprivation.

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