Fadi Bejjani is the director of clinical research at American Cryostem, LLC who develops trials for chronic and terminal diseases. In his free time, Dr. Bejjani enjoys playing tennis, which is a great cardio exercise that works the abdominals, forearms, and other muscle groups through lateral and front-to-back sprints. The length and competitiveness of a tennis match can vary greatly in duration and calorie burn, so those looking to use it for exercise should find a similarly skilled partner for a full-body workout that may last over two hours for a close match and help build endurance and stamina over several miles of movement.