WHY is yawning contagious?

 

Experts have conducted plenty of studies on this subject and concluded that the most common response to yawning is a sign of sympathy for a person. 

 

As it turns out, the contagiousness of yawning has psychological reasons. It is easier to catch yawning a person who is more prone to making connections with others. Otherwise, the more sociable a person is, the more often he yawns "for the ride". 

 

📌 By the way, indomitable yawning is the most frequent cause of jaw dislocation.