Wonder why there are Tears of Joy? Yale Psychologist Explains

Crying tears of joy is how the brain is able to return the body to equilibrium when experiencing extremes in emotion, a new study reveals. It is the same reason why some people are susceptible to nervous laughter or the feeling of wanting to pinch a cute baby's cheeks.

Researchers at Yale University led by psychologist Oriana Aragon, conducted a series of studies to tackle why some people cry when they are happy or other behaviors that seem contradictory to the emotions being expressed.