The SP program calculates your nutrition range based on your estimated weekly calories burned. Personally, it makes sense to me to have it based on a little bit longer term like that instead of adjusting daily. So, if you need to, I would change your fitness settings/goals only if your week's average changes.
If you want to get an "official" SP coach's or other expert input, I'd suggest posting your question in the Message Boards. You can get there by using the Message Boards link that is under the Community tab near top of the page.
| December Minutes: 390