Why is yawning contagious?
Question:
Answers:
its all in the head,yawning is a function telling u u don't have enough oxygen in ur lungs.
Other Answers:
I don't know, but I do know that it is only contagious if you look at the person's EYES, not their mouth. Try it. =)
If it helps, reading that made me yawn too.dunno why!!
YES!
I had an anthropology class and we studied a theory that the contagiousness of yawning has to do with the hunter gatherer pack mentality of early humans. When it was time for the pack to change gears (waking up, going to sleep, getting ready to hunt) if one member would yawn it triggered the other members to yawn as well. When you yawn it gets more oxygen in your system giving you a little edge. So it evolved in humans to follow suit in yawning. It was just a theory .
see Dr Karl's article.. http://www.abc.net.au/science/k2/homework/s95628.htm
|-o (just thinking about this is making me yawn)
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