Why Does Yawning Seem to be Contagious?!

Question: Why Does Yawning Seem to be Contagious!?
Answers:

mirror-neuron system

http://www!.world-science!.net/exclusives/!.!.!.

cheak it outt!.!.Www@Answer-Health@Com

its one of those unanswered questions!. i think its just involuntary actions, like breathing, blinking, and twitching!.Www@Answer-Health@Com

I don't know why, but even the mythbusters proved it is contagious!. Just reading this question made me want to yawn lolWww@Answer-Health@Com

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Why Does Yawning Seem to be Contagious?!

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