Cycling puts some pressure on the hips and back. If you want to ride for a long time, you need to pay attention to the correct posture.
For beginners and tourists who just want to relax by bike, the ideal cushion position is: short upper tube; The height difference between the seat cushion and the handlebar is very small. Knights with back problems should also choose this sitting position, because this sitting position can reduce the burden on back muscles. After routine training, the height of the handle can be reduced. But it should be noted that every change should be gradually adapted. The difference of half a centimeter has a great influence. A knight whose back muscles can adapt to the riding burden should try to sit flat on his upper body and forward. The longer upper tube makes the upper body stretch forward, so the center of gravity of the body moves forward, which makes the shoulder muscles bear a heavy burden. The height difference between the seat cushion and the handlebar also forces the upper body downward, which increases the burden on the back muscles. This sitting posture is not suitable for beginners and knights with back problems. For sports car drivers, this posture can reduce wind resistance.