For a good yawn I need to really open my mouth and push/strain my jaw muscles. If that doesnt happen, then the yawn feels incomplete to my body and it happens again and again till it works “right”
What is the reason/body function behind that?
For a good yawn I need to really open my mouth and push/strain my jaw muscles. If that doesnt happen, then the yawn feels incomplete to my body and it happens again and again till it works “right”
What is the reason/body function behind that?
The co2 bit it’s part of it, but coming down the brain is another aspect of what makes people yawn.