The advantage of a fixed riding platform is that no matter how you ride it, it won't move, so you can raise the pedal frequency very high, or stand up and stamp your feet. Roller skating table is different. You must rely on the sense of balance and the speed of the wheels to keep the car from falling off the roller. You can do exaggerated movements in the car, and the car will shake, but you just need to find a way to keep balance. Therefore, in addition to training the ability to trample, we also train the sense of balance and coordination, so that riding on the road can increase stability and reduce the waste of strength.