You may already have yawned simply because you read the word. If not, there is a reasonable chance that a photograph or video of someone opening their mouth in a long yawn would do the job. Few ordinary human behaviors are as strangely sugg...
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Yawning is more than just a sign of being tired — it's one of the most contagious behaviors in humans. Scientists believe it’s linked to empathy and social bonding. When we see someone yawn,...
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Why is yawning contagious? Yawning is considered contagious because it is an automatic and involuntary response to seeing or hearing someone else yawn.
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