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Why do we need to sleep?

  1. Jul 14, 2016 #1
    Why do we need to sleep, why we have allucination, feel bad and die if we don't?
    What happens in our brain and what makes sleeping so special and Important?

    Will we be able to develop some chemicals or something that allows us to stay awake without troubles or problems some day and avoiding the need to sleep for ever?
  2. jcsd
  3. Jul 14, 2016 #2


    Staff: Mentor

    This wikipedia article answers many of your questions:


    During sleep the brain reorganizes itself, filing away important facts and events for future use.

    The most recent explanation for sleep is that the brain sheds interstitial waste products (see Increased waste clearance of brain topic):

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