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SciShow Psych
SciShow Psych
Why Is Yawning Contagious? (2017x74)
Air date: Nov 16, 2017
When you see someone yawn, you’re probably pretty likely to follow suit. But what makes it so contagious?
Rank
#34866
Premiered
: Mar 2017
Episodes
: 398
Followers
: 1
Ended
YouTube
at 15