• Question: why do we sleep?

    Asked by nicenadia to Alessandro, Angela, Claudia, Marina, Phil on 11 Mar 2013.
    • Photo: Marina De Vos

      Marina De Vos answered on 11 Mar 2013:

      We need sleep to be able to recover from all the impulses and activities that we had while we were awake. Without sleep humans (and all other animals) cannot function. While we can forgo sleep for longer periods of time, eventually we will need it or our bodies will stop to function. We need on average 4 hours to keep our body functioning.

    • Photo: Claudia Krehl

      Claudia Krehl answered on 11 Mar 2013:

      We sleep to give our body a rest and some time to recuperate energy for the next day. Scientists have shown we should sleep for 6 to 7 and a half hours to get the most of our brain when we are awake.

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