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Why Do We Yawn? Science May Have The Answer And It's To Cool The Brain

ThatNaijaBlog - Researchers believe yawning is contagious and help’s in increasing the heart rate, blood flow and uses muscles in the face to maintain a lower temperature of the brain.

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ajax171712d ago

Vsauce ftw! This guy is good too.

RE_L_MAYER1712d ago

give oxigen to the brain-i thought they discovered it like 10 years ago

SantistaUSA1712d ago

I can't stop yawning now :$

zalanis1712d ago

this is what our hard earned contributions go towards?? what a joke. thought they'd be working on finding the cure for cancer or something.

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