[rpk1988]

What causes people to yawn? Of course it is a sign that you are tired, but what excactly causes you to yawn.

Rant on.

 

[-dustin]

lack of oxygen to the brain, or something like that.

 

[Changleen]

When you are tired or relaxed, you don't breathe as deeply as maybe you should in order to introduce fresh air into your whole lungs. Yawning is caused by your body sensing it has excess CO2 in your lungs. It is a mechanism to get a big volume of fresh air and flush out all that old CO2.

 

[Tame Ape]

When you are tired or relaxed, you don't breathe as deeply as maybe you should in order to introduce fresh air into your whole lungs. Yawning is caused by your body sensing it has excess CO2 in your lungs. It is a mechanism to get a big volume of fresh air and flush out all that old CO2.

What about when some else yawns first and then you break out in a yawn?

 

[BurlyShirley]

When you are tired or relaxed, you don't breathe as deeply as maybe you should in order to introduce fresh air into your whole lungs. Yawning is caused by your body sensing it has excess CO2 in your lungs. It is a mechanism to get a big volume of fresh air and flush out all that old CO2.

Chang, that is a theory from 15 years ago that has since been debunked.
Well, I heard that anyway.

 

[firetoole]

or when you look at the sun



oh wait that's when you sneeze

 

[mindlessfr]

myth busters actually did a show on wether or not yawning was contagious but i cant really remember the whole show, all i remember is yawning over 67 times i lost count after 20 minutes

 

[Potroast88]

Most of Stinkyboy's posts.

 

[the BIG cheese]

I read an article in a month or two ago about it. Some guy at some university (my documentation is great isnt it) says that after a study he concluded that yawning expresses empathy between mamals, including us. That explains the contageous aspect and it also means that we are paying attention best when we yawn.......

 

[dropsdon'tlikem]

I yawn before races to release stress

 

[Wumpus]

What makes you yawn?

 

[rpk1988]

I usually yawn a lot in class before I get called on to read something. Its like my body doesnt want to do it.

 

[DRB]

Does it hurt when you pee?

 

[stinkyboy]

Most of Stinkyboy's posts.

Why do you insist on hurting me?

:nonono:

 

[rpk1988]

Everybody insists on hurting you. Its just an RM thing.

 

[OGRipper]

Why do you insist on hurting me?

:nonono:

What are you Boy George now?

 

[blt2ride]

I've always wondered why peoples' eyes water when they yawn. Does a yawn affect the tear duct?

 

[Zark]

I've always wondered why peoples' eyes water when they yawn. Does a yawn affect the tear duct?

It usually has to do with boring someone to tears

 

[Toshi]

this thread made me yawn. and cry.

 

[rpk1988]

Yea I never understood why you teared when you yawned. It always makes people think you are sad or something after a good yawn.