I always do sedentary too, and I always get around the same number, 1950. I think the first activity bump is ok, and that's what I actually target, and I've been able to maintain just fine for months, but the categories are so subjective, and people in general have no clue how much physical activity they're doing. There were studies about self-reporting, and according to the standard distribution metrics, the participants were basically picking random numbers (they were off by 50% +/- 75%).