Articles on Yawning

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You can’t resist the yawn. Chayanin Wongpracha/Shutterstock.com

What is it about yawning?

Everybody does it, but why? Scientists aren't really sure if exhaustion, stress or some other social factor is at the root of yawning – and how it can be so contagious.
Tired? I know how you feel, my friend. Fran Tapia/Flickr

Contagious yawns show social ties in humans and bonobos

Most of us have experienced the overwhelming urge to yawn in response to another person yawning – but we’re not the only…

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