Mind Hacks: The Social Yawn

Mind Hacks: The Social Yawn: “All animals yawn (see animalyawns.com) and in humans yawning seems to be contagious. Seeing another person yawn, or even just reading about yawning can make you yawn.”

I discovered a while ago that you can make cats yawn, but Mind Hacks have gone into far more detail about the whole thing. Unfortunately, reading about it made me yawn.