How can a sprint run fast?

The technical content of sprint is very high, not just going straight. The running posture of sprint is very important. Incorrect posture will increase one's own resistance and limit the rising space of performance. When a person's grades rise to a certain level, his grades will remain at a certain level. At this time, it is necessary to increase the amount of exercise to stimulate the potential of athletes. We must endure hardships and master comprehensive technology. When running 100M, there must be a starting device. The first step is not too big. If it's too big, the feet won't work hard and people will stare. In this way, people have no acceleration. Lean forward for the first 20-30M, but relax, don't bow your head, and don't deliberately lower your upper body. Actively swing your arms, your feet should be strong, you should pedal hard, and your pace should be fast. The remaining 70M upper body should be lifted gradually, but it must not lean back. Try to get their upper bodies forward. Of course, if you are an ordinary sports fan, the requirements are not so high.