Why do we yawn? If you think the answer is BOR-ing, then maybe your brain's just overheated. Let Hank explain the new thinking behind why we ... hold on ... *yawn*. Excuse me.
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Tagged under: yawning,behavior,neurology,brain,blood,body temperature,biology,physiology,anatomy,science,hank green,sci show
Clip makes it super easy to turn any public video into a formative assessment activity in your classroom.
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