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5:32
YouTube
TED-Ed
The science of laughter - Sasha Winkler
Explore the common scientific theories about why humans laugh, and how this universal behavior evolved. -- Isn’t it odd that, when something’s funny, you might show your teeth, change your breathing, become weak and achy in some places, and maybe even cry? In other words, why do we do this bizarre thing that is laughter? Since there’s no ...
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