• Question: why do we yawn?

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

      Claudia Krehl answered on 11 Mar 2013:

      The short answer is, nobody really knows. There has been a lot of research going on in this area and lots of theories have been tested including because we are tired, because of a lack of oxygen or because somebody else around us yawns. But none of these have been confirmed and it remains a mystery.

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