Prior to being a personal trainer Carlsbad, in the spring of 1991 I had been finishing my freshman year of studying engineering at the University of Washington in Seattle. One early morning my science professor went through a problem struggling with the First Law of Thermodynamics (also referred to as the conservation of energy). I did not know it during that time, but that morning would help figure my assumption years later that low-intensity “aerobic” activities are “exercises in futility.”