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Why is yawning contagious?

Why Do We Yawn?

12/03/2014 by admin

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Categories Science Tags Always tired, Always Yawning, Animals, AsapSCIENCE, autism, awareness, brain, Brain Activity, Brain temperature, breath, Breathing, Can't Sleep, Cartoon..., contagious, Cool brain, Copy yawn, drawing, Exhausted, Exhaustion, genetics, hands, Insomnia, Learning, Lungs, Mirror Neuron, Neurons, oxygen, Science, Sleep, Sleep Deprivation, Sleeping, Stop motion, Temperature, Tired, whiteboard, Why is yawning contagious?, Yawn, Yawn-O-Meter, Yawning
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