If you are heavy, the pressure on your knee joint will increase, which is the same for any exercise. Therefore, when doing a lot of exercise, we must pay attention to sports protection, fully warm up before exercise, and stretch and relax the whole body muscles after exercise.
If you want to practice, please keep the correct posture. Before you get on the bus, you must first decide the height of the seat. Usually, this height is based on the height when you stand on the ground and lift your thighs flush with the ground, so that when riding, the angle between your thighs and calves will not be too small, thus reducing the burden on your knees and avoiding knee injuries. Three times a week.
Or it can be suggested to use elliptical machine, which has moderate exercise intensity, protective effect on knee joint and good fat-reducing and shaping effect. I hope it helps you. Thank you.