NASA studies in America have shown that rebounding goes a long way toward stimulating the lymphatic system, improving circulation, general health and fitness. It has helped thousands to overcome arthritis, high blood pressure, high cholesterol levels and other illnesses. Bouncing is 68% more energy efficient than aerobic exercise and is excellent for people who don't like exercises or have difficulty finding the time. Rebounders are readily available and take up very little space - ideal for home or office.