Why do we yawn?

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VIENNA AUSTRIA – Hello science fans, today we’re talking about yawning.

Oscitation, or yawning, affects humans and animals. In the past, scientists have had a lot of different theories about yawning, like it was the body’s way of getting more oxygen to the lungs or that it was a result of boredom, or even an empathetic reaction.

The latest study, out of Austria and the University of Vienna, says yawning is a thermo-regulatory mechanism of our body. That’s geek speak for: yawning cools off your brain.

Scientists say a yawn triggers increased blood flow to the brain and the blood that’s rushing to your noggin has been cooled by the air you’ve sucked in. The result, your brain temp chills.

So the next time you yawn in a meeting, explain to your boss it’s because your brain is overheating (not because he’s boring).


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