Juice is not a magic fat burner. Some steroids can increase your body's ability to burn fat. But no amount of gear will guarantee you can eat all the fat you want and not get fat. If you eat a brownie on gear will you be more or less prone to gain body fat? That depends - as always - on how much total fat you're eating versus how much you're burning up. The juice will help you burn more fat. It will not give you carte blanche to pig out. If you're dieting and doing cardio you will burn fat faster. If you're eating crap and bulking up you'll build less fat and more muscles than if you were not on juice - but you could still get nice and fat! Use common sense. Eat right. Workout hard.