Just a quick note about BMI. I don't trust it. It has been adjusted quite recently so that those that were not previously overweight or obese are so now as a result of lowering the weight. At 6'1" I am supposed to weigh 182 lbs or so. That's not bloody likely to happen.
Back when I was in my early 20's and rowing competitively, I had a hard time getting under 180 and at one point tried to get under 170 to make lightweight class. I made it down to 167 and was as weak as a kitten. Comfortably, while rowing (body fat % = ~5%) I weighed in around 180.
Now, I'll grant you that muscle weighs more than fat, but come on, I was working out 13 times a week for two hours at a shot, only three of those were weight training workouts. The remainder could be considered cardio in nature. I'll be perfectly happy in the 185-195 range.
Be relatively fit, excercise regularly and eat well balanced meals (that can, on occasion, include "bad" stuff). If you ain't happy and comfortable doing what you're doing, the weight won't stay off.
FWIW, my BMI is currently estimated around 28. My risk is "increased". IN spite of the above rant, I think that is reasonably accurate. I am not going to seriously alter my lifestyle to get under the BMI of 25.0 though.