Why do we yawn? Yawning is a universal gesture. Everyone yawns, from babies still in their mother's womb to the elderly.

“Most of us equate yawning with being tired, but studies have found that yawning could be caused by your body trying to cool your brain,” Dr. Jen Caudle tells Yahoo Life. She describes yawning as the ...

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 ...

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 ...

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 ...

Dear Reader: We all yawn frequently, more often in the early morning and late evening. Does it mean we’re tired? Bored? Short on oxygen? As common as it is, we know little for certain about yawning.

Discovered: sharp-eyed shrimp, when yawning is less contagious, checking in on the climate conference, and a way to figure out if you've got math skills. Aren't sure if you're any good at math? Well, ...

From morning stretches to moments of boredom, why do we yawn? And why can't we resist when someone nearby does it too?

Your body has millions of parts working together every second of every day. In this series, Dr. Jen Caudle, a board-certified family medicine physician and an associate professor at Rowan University ...

Why do we yawn? This reflex occurs most often due to state change, i.e. during periods of transition between waking and sleep.

DEAR READER: We all yawn frequently, more often in the early morning and late evening. Does it mean we're tired? Bored? Short on oxygen? As common as it is, we know little for certain about yawning.