How Does Yawning Work?

Name: How Does Yawning Work?
Uploaded: 2012-11-02T19:01:53+00:00
Channel: Brain Stuff
Description: Just hearing about yawning can make you yawn, and no one is sure why. Learn more about yawns and yawning in this HowStuffWorks podcast.

13y ago

13 years ago

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Brain Stuff

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Just hearing about yawning can make you yawn, and no one is sure why. Learn more about yawns and yawning in this HowStuffWorks podcast.

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