Carbon Reflex

Hey any of you would like to know some interesting facts?

A yawn is a reflex of simultaneous inhalation of air and stretching of the eardrums, followed by exhaled air. Usually occurs when excess carbon dioxide and requires oxygen when the body is tired, or even during boredom. Did you know that half yawn lasts about six seconds? Most people yawn when others yawn. Also yawn while reading about yawning. In fact, probably 5 times a yawn as I write this! Do you yawn after reading this?

I yawn. haha. Also yawn when I see other people do. the very idea makes me yawn yawn! : P

Carbon Reflex

Carbon Reflex