The Naked Scientists

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Author Topic: Is yawning infectious?  (Read 1682 times)

Offline CZARCAR

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Is yawning infectious?
« on: 08/06/2011 20:38:52 »
yawning, yawn,yawn.......did u yawn yet?
« Last Edit: 14/08/2012 10:13:17 by chris »


 

The Naked Scientists Forum

Is yawning infectious?
« on: 08/06/2011 20:38:52 »

 

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