Can someone please tell me why yawning is contagious????!


Question:

Can someone please tell me why yawning is contagious????


Answers:

When you think about it is seems that way, if someone yawns others can't help but do the same. Try to fight it and its very very hard to do.


The consumer health information on answer-health.com is for informational purposes only and is not a substitute for medical advice or treatment for any medical conditions.
The answer content post by the user, if contains the copyright content please contact us, we will immediately remove it.
Copyright © 2007-2011 answer-health.com -   Terms of Use -   Contact us

Health Categories