Laughter is associated with sound that can be heard created by jokes or tickling.Strong and excessive laughter can sometimes bring an onset of tears or even moderate muscular pain as a physical response, especially in the stomach.
Laughter is a part of human behavior regulated by the brain.
It helps humans clarify their intentions in social interaction and provides an emotional context to conversations. Laughter is sometimes seemingly contagious, and the laughter of one person can provoke laughter from others.
The study of laughter, and its psychological and physiological effects on the human body is called “gelotology”.
Laughter differentiates man from animals.
Some animals have been found to make some chuckling noises similar to human laughter.
Recently it has been found that human infants start laughing aloud spontaneously even when they are 17 days old.
Previously it was thought that human babies start laughing only when they become four month’s old.
Also it has been found that there is difference in laughing by males and females.
Men and women respond to jokes differently because their brains handle them differently.
Also it has been found that laughter protects human heart.
With deep, heartfelt laughter, serum cortisol, a harmone secreted when we are under stress is decreased.
So when we are having a stress if we laugh stress decreases.
Also, laughter has been found to increase tolerance of pain and boost the body’s production of infection-fighting antibodies, which help prevent hardening of the arteries and subsequent conditions caused thereby such as angina, heart attacks and strokes.
After abdominal surgery, it is also advised for the patient not to laugh, as it could rip the stitches, because while laughing stomach muscles are stimulated and shaken.