Add laughter to your workout regimen. Laughing provides a natural cardiovascular workout for your insides, increases your heart rate and circulation, and toning to your abdominal muscles. Dr. William Fry of Stanford University says, "Laughing heartily five times a day has the same beneficial effects as ten minutes on a rowing machine." What?s more? 10-15 minutes of solid laughter can burn 50 calories which can translate to 4.4 pounds in a year—hey, every little bit counts!