As a truck driver, you only make money when your truck is rolling. The downside is that your metabolism stops running. Not totally, but it slows down due to sleep patterns being thrown off, and other metabolic issues. Sipewe was a truck driver, and started studied metabolic endocrinology to get his own health back in order. In his book and training material, he goes into greater detail on this subject, and here Sipewe gives a little background on how his book came to be, and what inspired it.