Tag Archives: yawn theory
The real reason why we yawn
Posted on 04. Jul, 2008 by chaze.
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The reality is that even though people have been yawning as long as we have existed, we have no clue why we do it. Maybe it serves some healthful purpose? It does cause us to draw in more air and our hearts to race faster than normal, but so does exercise. There’s still much we [...]
