Monday, May 12, 2014

http://www.youtube.com/watch?v=dD0eK-lp2t8

http://www.youtube.com/watch?v=dD0eK-lp2t8
http://www.youtube.com/watch?v=dD0eK-lp2t8
Several Explanations Why Laughter Is Catching and Also therefore Good for You

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