Whenever my toddler sneezes, yawns, or farts, it's the cutest thing on the planet. Whenever my husband does the same, I'm less amused. And whenever it happens during yoga, let’s just say that it can ...

A yawn is an involuntary reflex that involves opening the mouth wide and taking in a deep breath, followed by a slow exhale. Several theories exist about why we yawn, but researchers have not proven ...