Why is yawning contagious?

Yawns don’t catch a among children younger than five a among people with emotionally dampening disorders. That leads researchers to believe contagious yawning is just another way humans reinforce social bonds between people. Humans are social and emotional animals. We tend to understand and feel the emotions of friends and even strangers. Yawning falls into that category. When we see someone yawn, we yawn.


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