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Why Do I Need You?

David measures the movement of facial muscles in two group of subjects and reveals why we mirror each other’s facial expressions - with important ramifications for botox-users.
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Clip Season 1 Episode 5 Length 03:26 Premiere: 11/11/15

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Turquoise and blue background with illustrations of smartphone, tv, computer. Text reads Used by more than two millions people each weekTurquoise and blue background with illustrations of smartphone, tv, computer. Text reads Used by more than two millions people each week

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