Stuff You Should Know


Society & Culture

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How do landfills work? How do mosquitos work? Join Josh and Chuck as they explore the Stuff You Should Know about everything from genes to the Galapagos in this podcast from HowStuffWorks.com.

What makes us yawn?

April 25th, 2013

Episode 567 of 1050 episodes

What is it that makes us suddenly draw in a deep breath through a wide-open mouth? researchers really don’t know. Whether the answer is physical, mental or even contagious there is pretty much no chance you won’t yawn during this episode.

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