Why is yawning contagious? Or is it actually? Why do we yawn? Yawing bring us more oxygen. Leading more oxygen to our brain as brain needs more oxygen. Our experiences show that it is actually contagious, the sympathy of our brain with other human shows this. Even little bird do yawning. Contagious yawning happen between chimpanzee, dogs, cats and many other animals, and for humans. Some scientists say that yawning is a social behavior. Some electrical activities in the brine lead to yawn. If you are interested in learning me about yawning, let’s watch e video to learn more about yawning.