Tell Me Why We Yawn explores one of the strangest reflexes we have. A simple yawn that can travel from person to person, even through a screen. For years we were told yawning is about oxygen, but modern research suggests it may work like a cooling system for the brain, keeping us alert when our minds slow down.
Even stranger, we don’t just yawn for ourselves; we copy each other. From humans to wolves, chimpanzees and even reptiles, contagious yawning may have evolved as a way for groups to synchronize their behavior and stay safe together.
This episode uncovers how an ancient survival reflex still shapes our social wiring today.