Quizzes & Puzzles2 mins ago
why do we yawn?
5 Answers
What is a yawn, why do we do them? Why do we copy people doing them?
Answers
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No best answer has yet been selected by geff_p. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.was gonna say lack of oxygen but read this lol
http://en.wikipedia.org/wiki/Yawn
very interesting tho it might make you yawn
http://en.wikipedia.org/wiki/Yawn
very interesting tho it might make you yawn
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