UNEXPECTED YAWNS ARE LIKELY THE RESULT OF A SLIGHTLY OVERHEATED BRAIN

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Last week in the middle of a lecture, I just couldn't help it. I  inhaled a giant involuntary yawn.The embarrassing thing is that the lecturer saw me and I'm pretty sure she thought I gave the impression that I was less than enthused. Was I bored with her lecture?No. 
According to a 2007 Study  in the Journal of Evolutionary Psychology, yawning increases blood flow to the brain, which helps move heat away and cools the area. In essence, those unexpected yawns are likely the result of a slightly overheated brain , according to the study. 

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But,here are few tips to stop you from yawning while deep into the lecture.
1. As soon as you begin yawning, touch your tongue to the upper jaw.This will stop the yawn
2.Try chewing gum.This keeps you diverted from yawning.
3. Don't look at people yawning. Yawning is contagious.
4. Try not eating carbs before class.Carbs makes some people more tired.Instead eat protein  

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