• Question: why do we need to sleep

    Asked by thesciencemaster to Joanna on 17 Jun 2016.
    • Photo: Joanna Bagniewska

      Joanna Bagniewska answered on 17 Jun 2016:

      We need to sleep for a number of reasons. Sleep is not just a period of doing nothing – in fact, the body is very active during sleep, but in a different way. Sleeping helps us process our memories better – which is why children need more sleep than adults: they have to learn so many new things! It also allows our bodies to recover, and it literally clears our minds – turns out that the waste products from brain cells are cleaned up best during sleep. Useful!