Hyperbody Danger, Danger Will Robinson. Sure eating low carb diets cause your body to burn fat but it also burns muscle so it is defeating the purpose. All your hard work will have been for nothing. The trick is to find the happy medium between low carb and low fat diet. It is the same eating plan for a six pack as guys like Brad Elder (PGA Golfer), Shawn Springs (NFL), and Darcy Hordichuk (NHL) and select Navy Seals use.Wait a second. Are you still doing cardio? Some interval or circuit training is ok. In fact, both of these methods can help pack on muscle mass. But I'm talking about steady state cardio. Don't do it.