• Question: Why do humans need sleep, because we only save around 10% of our energy when we are asleep? :)

    Asked by musicman to Hitesh on 20 Jun 2012.
    • Photo: Hitesh Dave

      Hitesh Dave answered on 20 Jun 2012:

      Humans do require sleep as per their age group to give rest to the body after intense working of the body…

      Sleep is a natural activity of absent consciousness, it is mainly to give rest to all voluntary muscles.It is observed in all mammals, all birds, and many reptiles, amphibians, and fish.

      Sleep is often thought to help conserve energy but decreases metabolism only about 5–10%. Hibernating animals need to sleep despite the hypometabolism seen in hibernation, and must return from hypothermia to euthermia in order to sleep, making sleeping “energetically expensive.

      I must say it was really good question and I need to use power of wikipedia for better answer…alll the very best..

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