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 ...

Ever noticed how one yawn can trigger many? Science reveals how your brain copies others, why yawns spread so easily, and what this curious habit says about humans.

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 ...

Experts discuss the mysteries of yawning at first ever international conference. —LONDON, June 28, 2010 -- For two days last week, they came to Paris. Over two dozen experts in the field of ...

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 ...

I read recently an explanation for yawning that is plainly wrong. The same idea has surfaced regularly over the years. Any idea, good or bad, is hard to kill. Yawning by this account is performed in ...

Dr. Anastasia Agaeva indicates that many believe that yawning is due to a lack of oxygen in the body. How true is this belief ...

Ever notice how you automatically yawn when someone else does it? That involuntary mouth-stretching moment isn’t just your brain being lazy. It’s actually broadcasting something pretty revealing about ...

Yawn next to your dog, and it may do the same. Though it seems simple, this contagious behavior is actually quite remarkable: Only a few animals do it, and only dogs cross the species barrier. Now a ...

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 ...