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Post by ArkAngel on Apr 5, 2009 10:43:13 GMT
This question is no completely understood. However, some scientists believe that yawning is an ancient instinct designed to shift our entire body out if one state and into another (e.g. sleepy to awake). Just so you know, one thing that is certain is that yawning is not related to lack of oxygen, otherwise we'd be uncontrollably yawning during athletics  |
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Post by Neku on Apr 5, 2009 14:56:47 GMT
good point about the athletics thing at the end.
and shifting to another state is what I think it is.
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Post by sythlord on May 25, 2009 15:33:59 GMT
we yawn unconciously because we aren't getting enough oxygen to our brain. If you notice, when you yawn you tend to take in a deep breath. AS for yawns being contagious, i keep saying I'll look into it but don't xD
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Post by calejand on May 27, 2009 20:19:00 GMT
In medical school, we were taught that yawning supplies your brain with oxygen
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Post by Admin on Jun 2, 2009 4:57:46 GMT
lol, wrong xD
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