As soon as you give way to laughter, electrical impulses are triggered by nerves in your brain, which set off chemical reactions there and in other parts of the body. Your endocrine (glandular) system orders your brain to secrete its natural tranquilizers and relieve pain. Other substances released in the wake of laughter aid digestion, while others make the arteries contract and relax, improving blood flow (except for patients with asthma), and possibly alleviating high blood pressure. To say laughter is the best remedy for what all you are going too far, but if you call it good medicine, few doctors will disagree.

Is Laughter Good for Your Health?