To make things easier and more reliable, the calories burned during sports are not considered in this method. That would have an impact on the results indicated through the application. Practicing sports causes your muscle mass to increase and since it weighs more than fat (for equal volumes), it would skew the results indicated by the application if you include these Calories in your daily accounting. In other words, practicing sports adds to your muscle mass which weighs more than fat (based on comparable volumes): that explains how including the Calories burned will skew the statistics reported by the application (this is further explained in the Secret of Weight book). Sports are to be considered as a “hidden bonus” under this method, which works best if followed as directed. The general basic reference to be used for a woman is 1,800 Calories, although that may have to be lowered a little after menopause (to 1,600 Calories, and only if you do not lose weight after starting out with 1,800 Calories first). For men, the standard budget is set at 2,100 Calories.