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  2. 10 Tips to Increase REM Sleep Naturally - AOL

    www.aol.com/10-tips-increase-rem-sleep-115700126...

    Each sleep cycle lasts about 90 to 110 minutes and includes stages that fall into two main phases: non-REM (or NREM) sleep and REM sleep. Non-REM sleep has three sub-stages: light sleep, deep ...

  3. Non-rapid eye movement sleep - Wikipedia

    en.wikipedia.org/wiki/Non-rapid_eye_movement_sleep

    People who do not go through the sleeping stages properly get stuck in NREM sleep, and because muscles are not paralyzed a person may be able to sleepwalk. According to studies, the mental activity that takes place during NREM sleep is believed to be thought-like, whereas REM sleep includes hallucinatory and bizarre content. [1]

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

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    Then those cycles are broken into stages within two categories: NREM sleep (non-rapid eye movement sleep) and REM sleep (also known as rapid eye movement sleep). Your brain activity changes during ...

  5. Why getting more deep sleep may help improve memory - AOL

    www.aol.com/why-getting-more-deep-sleep...

    Sleep is also important for brain health, as poor sleep is a risk factor for cognitive issues such as memory loss. “Depriving humans of sleep leads to all sorts of problems and can cause serious ...

  6. Sleep and learning - Wikipedia

    en.wikipedia.org/wiki/Sleep_and_learning

    During a normal night of sleep, a person will alternate between periods of NREM and REM sleep. Each cycle is approximately 90 minutes long, containing a 20-30 minute bout of REM sleep. [7] NREM sleep consists of sleep stages 1–4, and is where movement can be observed. A person can still move their body when they are in NREM sleep.

  7. Sleep - Wikipedia

    en.wikipedia.org/wiki/Sleep

    Other aspects of sleep health have been associated with obesity, including daytime napping, sleep timing, the variability of sleep timing, and low sleep efficiency. However, sleep duration is the most-studied for its impact on obesity. [125] Sleep problems have been frequently viewed as a symptom of mental illness rather than a causative factor.

  8. Do You Really Need 8 Hours Of Sleep? Why Experts Are ... - AOL

    www.aol.com/lifestyle/really-8-hours-sleep-why...

    Unlike traditional CBT, which provides mental health support, CBT-I is specific to sleep, using techniques like limiting the amount of time you spend in bed, going to bed only when sleepy ...

  9. REM rebound - Wikipedia

    en.wikipedia.org/wiki/REM_rebound

    REM sleep is decreased during the first half of the sleep period and stage 1 sleep is increased in the second half of the sleep period. [5] Most antidepressants, in particular selective serotonin re-uptake inhibitors (SSRIs), such as citalopram and paroxetine , are potent inhibitors of REM sleep and may also cause a REM rebound on discontinuation.