Why Do We Yawn?

What makes yawning so contagious?
Watch the ‘Yawn-O-Meter’:

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Written and created by Mitchell Moffit (twitter @mitchellmoffit) and Gregory Brown (twitter @whalewatchmeplz).

Further Reading —

Yawning as a Brain Cooling Mechanism:

Chimpanzees and contagious yawning:

Familiarity-connected or stress-based contagious yawning in domestic dogs:

Contagious yawning, social cognition, and arousal: an investigation of the processes underlying shelter dogs’ responses to human yawns:

The thermoregulatory theory of yawning:

Male yawning is more contagious than female yawning among chimpanzees:

Mirror neuron activity during contagious yawning–an fMRI study:

Thermoregulatory theory of yawning:

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