I'm a natural competitor. The best fat loss stack I've ever used is nicotine with 7-keto. I'm not a smoker, but for my last two show I burned 3-5 cigs a day and took 150 mg 7-keto divided into 25 mg until I hit 150 mgs. Hypo-caloric diet, no cardio, posing my ass off for the finsal 5 weeks...