Most probably, you are going to use these drugs to reduce your body fat and working out followed by cardio is going to help you a lot, but you need to remember that your body has other needs than just burning fat. Your body needs proteins to repair and build muscles among other things. Therefore, to get maximum benefits out of your workouts and steroids you need to plan your diet very carefully. It should have plenty of proteins and carbohydrates. When you work out your body need lot of energy. Most people make the mistake that they do not use carbohydrates in the food they take before workout. It means that their body will use up glucose that their muscles need and they will not be able to get the maximum benefit.