Changes to your weight, training regimen, or overall health may require an adjustment to your dietary goals. Weight loss (or weight gain) alters the overall nutritional needs of a person, as does increased or decreased training load. As these variables change, be sure to update your tracking software. Some trackers prompt the user for weekly or monthly updates of weight and activity, while others do not. Either way, Eley recommends updating the profile for every five pounds of weight gain or loss. Drastic changes to activity level (say, an Ironman peak, taper, and recovery) also require updates.