Many of the videos suggest social mirroring, which happens when individuals unintentionally imitate the actions of others, along with empathy, may be why some people yawn when they see others do it ...

“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 ...

Ever wondered why yawns are so…contagious? We obviously know what a yawn is, here's a more scientific explanation: "The activity of yawning consists of an involuntary wide opening of the mouth and ...