Free-Weights = 10.4kcal, Machines = 8.9 kcal, Incorporating Cardio in a Weight Training Circuit = 13 kcal/min Burned
This article is not supposed to encourage the use of exercise as a means to eat more junk. After all a psychotherapeutic / psychiatric ward is the only place this form of exercise addiction is going to get you. Ok, let me briefly make one thing unmistakably clear: you should never train to burn calories (even worse, to eat pizza and pie, because you "deserve it"). Good reasons to train are (a) to build muscle, (b) build strength, (c) improve your conditioning and (d) general health. It is likewise a good idea to (e) support your dieting efforts with strength and cardio training that is meant to increase the rate of fat/muscle loss. Yet even if you don't train to burn calories, it can be very useful in all these contexts to have at least an estimate of how much energy you're spending during the workouts. What for? Well, to know roughly how much more you'd had to eat to stay in an energy and how much more would be too much so that fat gain would be the inevit...