Keep track of your activity and fitness here! The management feature of the Online Nutrition Tracker allows you to log what kinds of fitness activities you are doing, how often and how long you are doing them, and shows you how many calories you may have burned in those activities as well as for the entire day. This caloric expenditure is referenced against the calories you are eating each day. Can't seem to lose weight? This important feature will allow you to monitor how many calories you need to be burning vs. how many you are bringing in.