The principle of the movable board is that by twisting the body to move forward, without pushing and pulling with the feet, and with the twisting action of the waist, it can achieve remarkable slimming effect, which is more useful than turning the hula hoop; From a gender perspective, as a male player, it is undoubtedly a more interesting skateboard, while for a female player, it not only ends the history of skateboarding without girls, but also plays an important role in fitness.