What we know about yawning, from why we do it to why it's contagious

Yawning, an involuntary behavior that is both mechanical and psychological, is notably contagious and observed across various species, including chimpanzees. Recent research published in Nature Scientific Reports demonstrates that chimpanzees can catch yawns from an android model, suggesting that yawning serves as a social cue for rest and is linked to empathy, unlike other behaviors that don’t elicit similar responses.

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