Some race walkers can glide by you without your hearing a single footstep. They do this by rolling through the stride, first landing with the toe pointed as the heel makes contact with the ground and then gradually progressing forward as the toe lowers. In contrast, some walkers land flatfooted. This makes it almost impossible to land with a straightened leg. Other walkers land with a toe pointed, but flatten too quickly. This can make a you walk as if you have square tires. This video teaches you how to correct the problem.