A good laugh has great long-term effects. If you start to laugh, it does not only relieve you mentally, it actually induces physical changes in your body. Laughter can stimulate many organs. Laughter improves the intake of oxygen-rich air, stimulates your heart, lungs, and muscles and increases the endorphins that are released by your brain. Laughter can also stimulate circulation and aid muscle relaxation, both of which help to reduce some of...