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 ...

Scientists have identified some reasons why yawns spread from person to person. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Seeing or hearing ...

Yawning is usually brushed off as a harmless sign of sleepiness, boredom, or lack of focus. In truth, it plays an important role in regulating brain alertness and oxygen levels. While the occasional ...

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 ...

Contagious yawning refers to the tendency of individuals to yawn after seeing, hearing, or even thinking about someone else yawning. About 40% to 60% of people exhibit contagious yawning when exposed ...