PRODUCT DESCRIPTION Rebound Exercise is the therapeutic movement on the mini-trampoline. Because it moves all parts of the body at once we can also call it a cellular exercise. As an exercise it is superior to any other because it not only uses gravity but also two other forces, acceleration and deceleration. As a therapy it is as beneficial as massage or reflexology, since the whole body is involved, it is truly a cellular exercise. Rebound Exercise fulfills all four requirements of effective exercise: Strength Aerobic capability Flexibility Endurance. The greatest benefits of more vigorous exercise is the increase of oxygen. Increased oxygen helps us burn more calories, destroys toxins, gets rid of bacteria and fungus and stimulates cardiovascular health. Bounce your way to better fitness with the Sunny Health & Fitness Foldable Trampoline. Thanks to its convenient, quarter folding design, the Sunny trampoline makes it possible to enjoy a full trampo-rebound workout on a larger, 40-inch diameter footprint even where space is limited. And, thanks to its heavy-duty steel frame, 32 metal springs, and six sturdy, one-inch diameter steel legs, stability is not sacrificed. Coming equipped with a height-adjustable stability bar, the Sunny trampoline is a great option for users of all fitness levels.