BYU Radio

Yawning is one of those weird bodily functions that we don’t think much about. It just... happens. But have you noticed that when someone else yawns, you yawn too? What makes yawning so contagious? Science hasn’t come up with a definitive answer yet, but there is one psychologist who has some insights. We’ve invited Dr. Andrew Gallup, professor of evolutionary psychology and internationally-renowned yawning expert, onto the show today to teach us more.

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