why is yawning contagious evolution
why is yawning contagious evolution
Everybody yawns - even unborn babies in the womb - and yet researchers aren't quite sure why we do it
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Apart from this real world about 70 percent of kids and teenagers are spending their valuable time in playing games...
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Everybody yawns-even unborn babies in the womb and yet Researchers aren't quite sure why we do it.Let's talk about some...
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