Why are yawns contagious yahoo

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So how does the idea of thermoregulation play into contagious yawning? Well, researchers believe that if we see someone else yawning, we are tipped off that we should start yawning to keep our brains cool, too. Neuroscientist James Giordano is one of the many researchers who agrees with the theory that copycat yawning is meant to aid in survival—at least for more primitive species.

Speaking to PBS , he explained that animals like mice tend to mimic the actions they see like scratching —and oftentimes, those actions end up preventing deadly infections and saving their lives. So there you have it: Though the jury is still out on why yawns are contagious, the mimicked action is likely a result of either survival or empathy, so pat yourself on the back for your highly-evolved, compassionate nature the next time a contagious yawn strikes.

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