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How Does Yawning Work? by Brain Stuff | Mixes.VuiZ.Net
How Does Yawning Work?
By
Brain Stuff
Tags:
#Howstuffworks
#Marshall
#Yawn
#Human behavior
#Energy
How Does Yawning Work?
Brain Stuff
0:00
0:00
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.
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