Why We Yawn
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2:53
Why are yawns contagious?by Buttie6013,964 views- 0:57
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Stony Brook University Contagious Yawning Experimentby Flamy999772 views
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Why is yawning contagious? The brain and mirror neuronsby anotherlookmedia8,899 views
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Avril the Yawnosaurby oinkfrog314 views
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Why do we yawn ?by caminteresse6,609 views
- 3:30
Yawn - Airby ehyphen66idy27,155 views
I yawn because I'm bored of seeing ugly and typical looking people
franki3Ru550 10 months ago
I yawned after watching this... I think I'm infected...
brotherofgurnip 1 year ago 2
ive watched a lot of yaning vids and i havent yawned once... is there something wrong with me?????
suckyskater21 1 year ago
yaaaaaaawn
nightengale379 2 years ago
thank you so much... you were very helpful
archanshah 2 years ago
he had to dub "Question"
09zeeman 2 years ago
just thinking of yawning makes me yawn
ochoaesputo8 2 years ago
....did she say FETUSES yawn?
duhhitskimmy 2 years ago
thx thats interesting
cyberkiwi101 2 years ago
thank you doctor Johnny Rock
popopopoooooooooyteh 3 years ago