If Calories in = calories out should we be static in weight terms? It probably is not that simple. Some calories are worthless or empty when eaten e.g. alcohol and some sugars at least in terms of nutrition. Exercise tones up muscles or develops them if they are seriously depleted. The benefits of exercise added to those of fasting are what is required for optimum health and fitness while we reduce blood sugars and body mass. It is not for ever that we are restricting calories so it soon may be easier to add treats after exercise but do not expect there not to be a cost. But wouldn’t it be great if it really were that simple?