Scientific research conducted in the United States concluded that laughter is a means of survival and a guarantee for the continuity of marriage.
According to CNN, a study conducted on couples at the University of California, Berkeley, showed that laughter is the glue that keeps people together.
The study team, led by psychology professor Robert Levinson, discovered that happy couples laugh more than unhappy couples.
Sophie Scott, professor of cognitive neuroscience at University College London, said laughter can help couples connect and maintain bonds.
Sophie Scott confirmed that laughter can give a person a feeling of pain.
She stated that once a person laughs, his adrenaline level decreases, as well as the levels of the stress hormone cortisol, in the long run.
Scientific research has shown that laughter is associated with physical, emotional and mental well-being, and is linked to personal relationships.