Hi there , don't worry about the spitting thing .. it's actually called "gleeking" and its just a bit of pressure on the saliva gland at the back of the tongue... just cover your mouth when you yawn from now on .
We yawn because We yawn because we need to get rid of CO2, so that would mean if you don't yawn you will eventually die from hypercapnia (too much CO2)!
If you didn't yawn, your brain would not receive the oxygen it needs, yawning is a way to give air to your brain
No. They yawn for the same reasons we do.
No it can't Would be good tho if it did
they yawn because when you yawn it passes on to other people . so you yawn then someone's right next to you then i think they inhale then they start to yawn ?
Insects do not yawn. People necessarily do not yawn only when they are tired. Most people, after reading this, will yawn.
We yawn because We yawn because we need to get rid of CO2, so that would mean if you don't yawn you will eventually die from hypercapnia (too much CO2)!
If you didn't yawn, your brain would not receive the oxygen it needs, yawning is a way to give air to your brain
People yawn, because its the fastest way to send air up into your brain, so if you were tired and your not thinking well, you would most likely yawn to get your brain working better.
No. They yawn for the same reasons we do.
Because it is sick, why would you ask this?
No it can't Would be good tho if it did
they yawn because when you yawn it passes on to other people . so you yawn then someone's right next to you then i think they inhale then they start to yawn ?
yes they yawn quietly
No whales do not yawn.
how do you know you yawn if you are sleeping?
Yes, yawn is an onomatopoeia.