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

    www.aol.com/deep-sleep-understanding-4-sleep...

    Deep sleep refers to slow-wave sleep — a stage in the sleep cycle when brain waves slow down. Getting enough deep sleep is crucial for numerous bodily functions. But how to increase deep sleep ...

  3. Sleep - Wikipedia

    en.wikipedia.org/wiki/Sleep

    The whole period normally proceeds in the order: N1 → N2 → N3 → N2 → REM. REM sleep occurs as a person returns to stage 2 or 1 from a deep sleep. [20] There is a greater amount of deep sleep (stage N3) earlier in the night, while the proportion of REM sleep increases in the two cycles just before natural awakening. [17]

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

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

    We have lots of work to do to really understand the sleeping human brain. ... Longitudinal studies are needed to assess whether enhancing deep sleep can slow cognitive decline or improve memory ...

  5. Deep sleep can keep two big health problems at bay, new ... - AOL

    www.aol.com/deep-sleep-keep-two-big-145255709.html

    It might be worth working a little bit harder to get that much-desired, but often elusive, good night's sleep. Deep sleep clears the mind of waste just as a "dishwasher" cleans dirty plates and ...

  6. Neuroscience of sleep - Wikipedia

    en.wikipedia.org/wiki/Neuroscience_of_sleep

    NREM is considered to be deep sleep (the deepest part of NREM is called slow wave sleep), and is characterized by lack of prominent eye movement, or muscle paralysis. Especially during non-REM sleep, the brain uses significantly less energy during sleep than it does in waking.

  7. Sleep and metabolism - Wikipedia

    en.wikipedia.org/wiki/Sleep_and_Metabolism

    SWS is considered deep sleep, when metabolism is least active. [1] Metabolism involves two biochemical processes that occur in living organisms. The first is anabolism, which refers to the build up of molecules. The second is catabolism, the breakdown of molecules. These two processes work to regulate the amount of energy the body uses to ...

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