Knowing how to balance cardio with weight training can be one of the most challenging aspects of putting together your training program. Learn how to do it here. Training your body is all about balance. A complete exercise program should address not only resistance training but cardiovascular training as well.f you're training to lose fat, you're going to need to do more cardio than someone who is training to gain muscle. A good starting point is three times per week, 20 to 30 minutes per session. Depending on the other factors we're going to discuss, you may need more or less than this.