2. If you are practicing single-row backward sliding, you must first ensure the balanced position of the human body. At this time, you should focus on your feet, and your knees can bend slightly. If you can't find a person, you can push the wall or other objects to slide by hand, and it is appropriate to combine the thrust with the strength of the calf.
3. In roller skating training, beginners fall easily. It is best to use the forward pedaling force of your feet in the early stage of sliding. If necessary, you can put your feet in a V shape to keep your upper body balanced. It is appropriate to use one foot for rowing training after proficiency.