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URL:  http://boards.fool.com/why-do-our-facial-muscles-constrict-to-form-30429959.aspx

Subject:  Re: Humor... Date:  12/13/2012  11:05 AM
Author:  AngelMay Number:  414665 of 457255

Why do our facial muscles constrict to form smiles and why do we expel syllables that are consistent with laughter when we find something to be amusing?



Oy, khalou! There you go again.

Why do our facial muscles constrict to form smiles....