Yawnz~~~

I've been yawning alot recently..
hahahaha..
So I've been thinking..
Why do we yawn????

Hahahaha..
There are a few theories..

The first one is that we yawn to get more oxygen into our brain and body..
Also to get rid of the excess carbon dioxide..
And then when you are with alot of people in a room, you inhale more oxygen and the other people can't have more..
So in turn they yawn too..
Hahahaha..
That's why yawning is contagious~~

Next is the boredom theory..
LOL~~
Teachers hate this..
When we are bored, we yawn..
Maybe it's just a social sign to a third party that we are bored..
So siannnnn~~

Thirdly is the more stupid theory..
hahahaha..
We yawn because we want to show our teeth to others..
Show them we can get nasty if we have to..
Some sort like a warning..
Lols..
Grrrrr~~

But also, we can't yawn with our mouths closed can we???
Hahaha..
That time i tried it and i was super not happy..
I was dissatisfied of the feeling and wanted to make myself yawn again so as to get back that yawning feeling..
Hahaha..

So, in conclusion..
I conclude that yawning is a very very complicated thing..
Hahahaha..
But overall, yawning is good..
So everyone..
Yawn more..
=D