Yawning is something everyone does, but have you ever wondered why? It’s one of those everyday actions that seem simple but has a deeper meaning. Scientists have spent years studying yawning, and ...

This reaction occurs because of mirror neurons, special brain cells linked to imitation. These neurons help us mimic others, ...

From a baby to an adult, and even animals, yawning is one of those things that most of us do multiple times a day, especially ...

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 ...

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 ...

Seeing or hearing someone yawn can make you yawn. This phenomenon is not limited to humans; some animals experience contagious yawning, too. But why is yawning contagious? Brain cells called mirror ...

DEAR DOCTOR K: I get plenty of sleep. So why do I yawn all the time? DEAR READER: We all yawn frequently, more often in the early morning and late evening. Does it mean we're tired? Bored? Short on ...

Researchers believe the yawning robot may have triggered some biological mechanism in the chimps that they associated with sleep. Image: Popular Science composite, Getty Images/ RMJM, Aline ...