Maybe that's not exactly what the coach wants to say. 100 meter sprint needs you to go all out! It's just that your upper and lower body muscles may be uncoordinated! Try to do some lower limb exercises, such as squats, frog jumps, jumping in place, short-distance sprints, etc. Of course, these coaches must have taught you! When running 100 meters, lean forward. First, the lower body exerts force, and the lower body exerts force to drive the arm, and the strength of the arm and the whole upper body is used to drive the pace to increase. ..