Okay - here goes! Pre-September, I was using the treadmill 4-5 times a week, at a 15 incline 5mph, anywhere from 45-90 minutes. A trainer at the gym told me I was probably doing too much cardio, but I wasn't really out of breath ever or sore at all. I was also doing Pilates once a week and usually a strengh training bodyworks class once a week. Anyway, I couldn't lose the extra 3 or 4 pounds post-baby, even though I was in all my skinny jeans, so I switched my routine to the Stair Mill, after I read in a fitness book that a certain trainer liked that machine the best. It KILLED me the first little while. I eventually got up to 3x week, 45 minutes. I was burning about half the calories that I used to burn on the treadmill, but I saw results in pounds lost and better tone and shape in my lower body, and I met my 20% bf goal. I also kept up my Pilates class one a week. In the last month, however, I have noticed that those skinny jeans and pants that I could wear at a heavier weight and higher body fat are too tight, because my butt is very "poofy" - it's like a shelf between my belt and my butt. This is not necessarily a bad thing, especialy for my husband, who loves the look, but it annoyes me to have to go up a size in jeans!! I also measured my thighs, and they have increased in diameter. So now I am afraid to use the Stair Mill too much, but I'm nervous that using the treadmill will not keep my weight down. Curently, I am hitting the Stair mill once a week, treadmill twice, Pilates once a week. I know women aren't supposed to be able to bulk up, but... Any advice??