From an evolutionary perspective, contagious yawning may have evolved as an adaptive social cue, helping groups to signal and coordinate times of activity and rest.

Question

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Contagious yawning may have evolved as a way to synchronize sleep-wake cycles and promote group cohesion and communication, making it an adaptive social cue. Studies have shown that contagious yawning is more likely to occur among individuals with stronger social bonds and that it may help regulate group behavior.

From an Evolutionary Perspective, Contagious Yawning May Have Evolved as an Adaptive