Yawning has long been dismissed as a sign of boredom or fatigue, a social cue we mostly try to suppress in meetings and on video calls. New brain imaging work suggests that instinct is misplaced. When ...

Yawning reverses cerebrospinal fluid flow, boosts brain blood surge, and may aid cooling and waste movement, challenging the idea that it signals boredom alone.

In a new study, yawning has been shown to push the brain’s clear fluid in the opposite direction of a deep breath.

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 ...

ATLANTA — Find yourself yawning a lot? Do you need that third or fourth cup of coffee to make it through the afternoon at work? Such signs of sleepiness may be a red flag of a serious sleep deficit ...

Yawning isn’t just a deep breath indicating tiredness or boredom, but a process that reorganises the flow of fluids out of the brain, according to MRI scans that also suggest we each yawn in a ...

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 ...

(CNN) — Find yourself yawning a lot? Do you need that third or fourth cup of coffee to make it through the afternoon at work? Such signs of sleepiness may be a red flag of a serious sleep deficit that ...