your calories burned goal should be set to doing whatever you are doing a week. so if you're hitting between 2400 and 3000 cals a week, that's where your calories burned number should be. if you're worried about hitting the larger goal, you can always set it to the lower [the 2400] and bump it up if you keep hitting the higher goal. you can always set it for the highest goal, note the changes to your ranges [should bump it up just over 140 cals if you switch your weekly calories burned from 2000 to 3000]. then set your calories burned to the more attainable level. on the weeks when you find yourself hitting the larger goal, just refer back to what the higher level ranges were.