• Question: Why do people yawn?

    Asked by Achievers. to Chapa, Priscilla on 1 Oct 2014. This question was also asked by stanlee.
    • Photo: Priscilla Ngotho

      Priscilla Ngotho answered on 1 Oct 2014:

      Hi Achievers

      It is popularly believed that yawning is caused by boredom or tiredness. New research suggests that there might be other reasons, but so far only theories. One of then is that a yawn helps us gulp in a huge lungful or air and get a large amount of oxygen and release a large amour of carbon dioxide. Another theory says we yawn to stretch out our muscles, especially the tongue and throat muscles. Actually most times we yawn and stretch out :). Research will soon tell us the truth.