Increasing the production of salivary immunoglobulin A, which defends
against infectious organisms that enter through the respiratory tract.
Aerobic effects that increased the body’s ability to utilize oxygen (Cousins called laughing “internal jogging” and it has been estimated that laughing 100 times is equal to 10 minutes on a rowing machine or
15 minutes on an exercise bike.)
A rapid ability to disregard aches and pains or to perceive them as less
severe (Children watching funny videos while undergoing painful procedures required less pain medication during as well as after the procedure. Patients who were told hilarious one-liners following surgery also had reduced requirements for pain drugs compared to controls.)
