Did you notice, we yawn when we see someone yawn? Why does it happen?
When we see someone yawn, we cannot stop our urge to yawn, no matter how much we control it. It is a form of Echophenomena, automatic imitation of another’s actions. This happens not only in humans but animals as well. Scientists relate it to a phenomenon called “Social mirroring”, a behaviour in which one unconsciously imitates others’ gestures. Mirror neurons in the brain stimulate this action.