Why is it that whenever someone yawns, and another person saw that person yawn, why do they yawn? ?!


Question: Why is it that whenever someone yawns, and another person saw that person yawn, why do they yawn.? .?
Answers:
No one really knows. Most speculation centers around the idea that it's an evolutionary trait about group cohesion. It happens in other animals also. My friend's dog will yawn in response to a person in the room who does!Health Question & Answer

I was told one time that it was used to signify when someone was sleepy (a long time ago) before people could talk and it just was the universal sign for being tired

I dunno, I guess it's a psychological thing =/ Health Question & Answer

monkey see monkey do[:Health Question & Answer

Look it up on the Myth Busters web site. They did an episode like that. Health Question & Answer

ha i just read your question and yawned.
its a psychological thing.Health Question & Answer

Yawn.

I wanted to answer this but now I'm too tired.Health Question & Answer

its contagisHealth Question & Answer

don't know this one but i do know it has to do with cycologe or somethingHealth Question & Answer

i read this question and i yawnedHealth Question & Answer



The consumer health information on youqa.cn 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 © 2007-2012 YouQA.cn -   Terms of Use -   Contact us

Health Q&A Resources