Dr. David Matsumoto, Happiness Conference explains Duchenne Smiles
2:09
Added: 2 years ago
From: Humintell
Views: 4,555
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  • Huh? I didn't get the question... Thanks for this!

    barrywilliamsmb 4 months ago

  • omg!!! loved it!!!!!

    i actually saw the gold medal but thought it couldn't be that easy...grrr :P got the first one right though..

    E2v0e0y6 1 year ago 2

  • this guy is awesome :)

    bAGGRESSIVE 1 year ago

  • Matsumoto rules!

    leoarg92heavy 2 years ago 3

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