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Asked by Taz&Mol to Deborah, Euan, Maheen, Rob, Stu on 16 Jun 2016. This question was also asked by cookie monster.
Question: Why do we yawn?
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Deborah Prunty answered on 16 Jun 2016:
Again no one knows for sure. There are a couple of theories though. One is that it’s to balance the pressure in our ears. Another is that when we are bored or tired our breathing is more shallow than it would otherwise be. We then yawn to rebalance the oxygen and carbon dioxide levels in our system
Comments
Piper Thomas :)) commented on :
because it shows we are tired and we should rest soon.
Cristal Palmer commented on :
because it shows a sign that you haven’t had much sleep or are tired and need more rest ?
ying and yang commented on :
what do you do in your spare time
ying and yang commented on :
do you like space
ying and yang commented on :
its a great comment
ying and yang commented on :
cheese