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Theory has it yawning helps cool the brain—and it turns out animals with bigger brains do indeed tend to yawn longer. Christopher Intagliata reports.
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By Scientific American4.2
599599 ratings
Theory has it yawning helps cool the brain—and it turns out animals with bigger brains do indeed tend to yawn longer. Christopher Intagliata reports.
Learn more about your ad choices. Visit megaphone.fm/adchoices

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