Ever noticed how one yawn can trigger many? Science reveals how your brain copies others, why yawns spread so easily, and ...

Not normal early, but Fringe Festival early. It’s like 9:30 or so, and even though I’m up, I sorta just went to bed. Ugh. I’m trying to pace myself, because I’m still less than two weeks into my ...

Humans’ first experience with yawning happens in utero, says Matthew D. Epstein, M.D., associate medical director of the Atlantic Health Sleep Centers in New Jersey. Yet, Earth-side, the ...

It took four medical personnel to put Jenna Sinatra's jaw back in place. Her head was also wrapped so her jaw would stay shut. A New Jersey woman found herself dealing with an extreme case of lockjaw ...

Johanna Simkin does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

Most vertebrates, including humans, yawn or exhibit similar behaviors. Spotted hyenas, which live in groups, yawn, as do orangutans, which often live alone. Parrots, penguins, and crocodiles also yawn ...

Open your mouth wide, stretch the muscles of your jaw and upper body, take a slow breath in, and then exhale quickly. What have you done? You have yawned. Many animals, including humans, yawn. They do ...

The average adult yawns about 20 times a day. But why? Surely we can’t all be that tired. The truth is, the science behind yawning is more complex than just a few hours too little sleep. Even more ...

Even fetuses yawn, a new study shows. During the second and third trimester, fetuses yawn frequently, and those yawns can be distinguished in four-dimensional ultrasounds from other mouth-opening ...

We do it when we're tired, when we're bored or when we're hungry; parachutists have been seen to do it before a jump, and research has even suggested a link between yawning and sexual arousal. But the ...