Exciting new discoveries by biomedical researchers in the areas of health and anti-aging have begun to usher in a new paradigm in fitness training. Research shows that high-intensity, anaerobic workouts that include the short-burst, get-you-out-of-breath, sprinting types of exercise, will make your body release significant amounts of the most powerful "fitness hormone" in your body - growth hormone, or HGH.

As children, HGH makes us grow taller. When we reach our full height, however, this hor...