What's the Point of Having a Cooler Brain?

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The brain works best at an optimal temperature. When speed skater apollo ono yawns before a race, it seems like he might just be trying to get his brain into peak racing shape. Stress and anxiety are things that increase brain temperature. So if it's super hot outside, the yawn stock of help exactly.

People yawn when they’re bored, right? So then why do athletes yawn before races? And why do so many animals yawn? … And why does reading this paragraph make you more likely to yawn?

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