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Why Is Yawning Contagious?

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Published on May 12, 2012

Why Do We Yawn?

http://www.twitter.com/Tweetsauce

Vsauce SHIRTS: http://www.districtlines.com/vsauce

Other peeps in this video:

Charlie: http://www.youtube.com/charlieissocoo...
Alex: http://www.youtube.com/nerimon

Yawning to cool down your brain: http://well.blogs.nytimes.com/2011/10...

and: http://dsc.discovery.com/news/2008/12...

More on yawning and empathy here: http://tlc.howstuffworks.com/family/c...

here: http://news.bbc.co.uk/1/hi/6988155.stm

and here (for the journal article): http://www.plosone.org/article/info:d...

Angry Mob play-set (no longer available): http://www.neatoshop.com/product/Angr...

PARAKEET YAWN: http://www.youtube.com/watch?v=nFiT6Q...

BETTA FISH YAWN: http://www.youtube.com/watch?v=FsBTwc...

SNAKE YAWN: http://www.youtube.com/watch?v=Fhfss_...

"Why Are Yawns Contagious" "Why is yawning Contagious" "why do we yawn"

Music by Jake Chudnow: http://www.soundcloud.com/JAKECHUDNOW

intro animation by http://www.youtube.com/rickonami

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