By the end of that summer, Jack had dropped 40 pounds and as he lost weight, he gained confidence. He was becoming a whole new person. What happened? Jack had discovered accidentally what our primitive ancestors always knew: whole-body natural movement is the key to fitness. And the movements he was utilizing at his job as a mover turned out to be the perfect exercise. Not only did it touch every muscle, but it gave him the feeling of accomplishment that makes it easy to stick with.