This is a common topic. The fitbit minutes are your very active and fairly active minutes from fitbit. I am not entirely certain how Spark is working out the calorie burn, I believe it is total calorie burn for all those minutes so it probably includes our bmr (Spark already includes this).
I have no issue with the minutes as in my case it is generally either my exercise or when I walk on errands or to work that is counting. Some of my intentional exercise is excludes because it doesn't register on fitbit as fairly active or very active. So I manually log that exercise--stretching, yoga (depending on the practice), pilates, ab work, etc.
The challenge is how to get our food plan to appropriately factor in our activity without adding too much since some of our "exercise caloris" are already included in our Spark allowance. This is kind of fidly, but I looked at what Spark says I burn in a week, then I estimated how much of that is my bmr for a week (I subtracted about 55 caloreis per hour) then I added a few hundred calories. So I subtract 1000 calories from that total. Then I entered my weekly burn - 1000 calories (the number not the equation) as my weekly exercise goal. Spark only uses our weekly goal to determine our allowance--not the actual minutes. I do see the red "you are burning too many calories" message starting mid week, I just ignore it. Doing this, my Spark range includes my fitbit allowance and is similar to the allowance other sites give me for my stats and activity. An easier way is to just enter your weekly exercise calorie burn for your weekly goal, only I think people routinely getting a high step count are probably more active than Spark accounted for as it would (should) be assuming a sedentary lifestyle. But the Spark allowance is broad enough you may be fine doing that.
One other tip, I set my Spark weight loss deadline to match the date that fitbit predicts I will reach goal. I never paid much attention to this setting, so perhaps that is obvious, but that effects how quickly you would lose weight following the Spark plan.
| March Minutes: 527