Yawning

[foxydivano1]

Please someone, tell me the purpose of yawning?

Thanks

[paulakea]

To get oxygen to your brain! I Believe!

[4getmenot]

yer to give yourself more oxygen to wake yourself up.

[violetblue]

To oxygenate the lungs, blood and thereby the body.

[PinkFizz]

well you learn something new every day!

[wonder years]

about yawning how come when someone yawns it makes other people yawn too?

[violetblue]

Because the human ape (sorry) is a copycat. you'll notice that, when you are speaking to someone you like, you adopt the same positions, mirror images of each other. I don't know how many times I've noticed it.

[wendilla]

Don't know the purpose but I have just yawned reading this.

[Fish Kid]

Something to do with stretching your diaphragm in order to circulate oxygen I think.

[teag1rl]

and I've just had a yawning episode while reading this post It's weird.

[Booldawg]

the purpose of yawning is to let your boss know he's extremely boring and should stop talking to you.

[pw1]

Hi

apparently no-one really knows the answer but say it could be to fill your lungs with more aire

[andy-hughes]

Opinions vary on this, but there is no definitive answer.

The latest theory is that it's an alarm signal which we hold over from our primitive ancestors. Primeval apes, sighting danger, would yawn to simultaniously draw back their lips from their fangs, signalling a willingness to fight, and also silently to alert the other members of the tribe.

The 'oxygen increase' theory has had a bit of a battering because we now know that foetuses yawn during their deveolpment, and they are not breathing air, so that idea is now largely discounted.