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 ...

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 ...

You've probably experienced it today — someone yawns, and suddenly you're doing it too. Even reading the word yawn can make people yawn. But why does this happen? Scientists have been studying ...

Yawning is one of the most common reflexes in our body. It is usually harmless and mostly indicates tiredness or fatigue. However, excessive yawning can be concerning. When you yawn too much, it could ...

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 ...