I need some help. I weigh 181 lbs. I just put on about 15 lbs of muscle the past two months but in the process gained some flab around my waist but nowhere else. I am really solid all over but around my waist. My top two abs show pretty good but its around the middle two/bottom two that I have the flab. Nothing bad but enough to bother me. I currently am doing 3 days of 30 min cardio on the elliptical/treadmill. I burn about 400-450 cals each session. I do all my cardio after I lift. I dont want to lose alot of the hard earned muscle I put on...When is the right time to do cardio? How long should each session be? How many times a weeks should I be doing cardio? I would like a 6 pack but a flat muscular stomach for the summer I would be ok with...just enough to burn that flab away while maintaining as much muscle as possible.