Why is yawning so contagious? - Explained

via irenesinternet.com

It turns out that yawning has to do with brain and facial temperatures, which is kooky enough. But the theories behind why yawning is so contagious? One says that it has more to do with shared empathy among groups of like creatures. Another one — and here’s the really weird part — sees yawning as an ‘emotional contagion.’ Craziness!

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Why We Yawn - And Why Yawning Is So Contagious

via gizmodo.com

Your grandmother says it's because you watch too much TV. Your teacher thinks it's because you're bored. And that creepy guy on the bus just slapped you with a phonebook in an attempt to exorcise the devil living in your molars. All because you're yawning.

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