Why do we yawn when we feel sleepy?
September 22, 2009 9:08pm CST
hi friends, Theory No.1: A yawn is your body’s operandi to take more oxygen into blood while yanking more carbon dioxide out of your fluid. It happens as an auto reflex.. i always yawn when i am sleepy and specially when i saw someone who yawn also, and i can't stop it.. and the person next to me will also yawn because she saw me yawning, .. so we keep on yawning the whole day, hahaha!! how about you friends, have you tried this?? do you yawn always?? have a great day and happy myLotting to all of you..
23 Sep 09
This is the first time i heard that yawn is contagious, hehehe. And of course i yawn too when im sleepy, especially in a boring meeting or in a boring class. Yawn is fun, and when i do it, i do it with moving my hand aside. It feels so great. Now i feel like yawning. Happy mylotting for you too
5 Oct 09
yes and often times it makes me sleep when i travel long hours.i also yawn if my teacher is boring to teach way back in college,it is said that carbon dioxide accumulate more in the brain that is why we need to inhale and exhale so that carbon dioxide will be out so oxygen can set inside our brain.happy mylotting..