2. Laughter operates on different levels: Biophysical and Biochemical. Biophysical Laughter oxygenates your organs. Because oxygen helps kill cancer cells, laughter can aid in this process by increasing oxygen to the blood.

3. More Physical Effects : boosts circulation. Exercises abdominal muscles. Exercises the muscles of your face. Enhances the flexibility of various joints throughout your body.

4. Laughing 100 times a day has the same cardiovascular effect as 10 minutes of aerobic exercise. The harder you laugh, the greater this effect. If you can find a way to put yourself into a state of rolling, outrageous laughter, you're going to get a fantastic physical workout from it.

5. Biochemical Laughter increases serotonin and boosts the immune system. This reduces depression, stress, and conditions aggravated by stress. It reduces the stress hormone, cortisol. Contrived (fake) laughter has the same health benefits. The body cannot tell the difference!

6. Video—WebMD [2:23]

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