1. Promotion of growth Jumping on a trampoline stimulates the bone plates by moving them up and down, which results in the cells of bone plates splitting. Thje exercise of hanging down from a
horizontal bar is helpful for increasing stature, because it stretches bone plates, which are pressed by the gravitational weight. 2. Effective for losing weight, removing stress, having good bowel
movements, strengthening muscles, and strengthening the respiratory and circulatory systems - When a person weighing 50kg jumps for 5 minutes 20 calories are burned - When a person weighing 60kg
jumps for 5 minutes 25 calories are burned 3. Prevention of lumbago The horizontal bar is good for not only children, but also for adults suffering from lumbago. Hanging from a horizontal bar for
30 seconds a day is effective for curing or prevention of lumbago. 1. We have doubled the effectiveness of exercise, by combining two products good for diet and growth, a trampoline and chin-up
bar. ? The conventionally installed horizontal bar in the doorway of a room:Is inconvenient because its height is not easy to control Becomes an obstacle to entrance and exit when installed at a
height suitable for a childs stature Can injure bone plates when a child lands on the door frame if it is installed too high and Is inconvenient to use because its thickness differs for the left
and the right. ? The conventional trampoline makes users easily feel bored, because exercise with it is monotonous. ? Trambar is more interesting, because children can hang down from a horizontal
bar while jumping on a trampoline. When children land from the horizontal bar, they get to land on the trampoline, so shocks are minimized. . The height of the horizontal bar is easily adjustable
to each childs stature. That is, it can be used for a long time as a child grows up, making it economical.[Example of height control ?] 3. The rubber at the bottom of the legs of the trampoline is
a shock absorber, which prevents noise from reaching lower floors. The elastic net of the trampoline is made from polyurethane, and can withstand a 100kg load.