Hey guys, I'm new to FN and hopefully some of you can give me a little insight. Basically my situation is that I've relied on genetics/high metabolism my whole life and I've managed to stay fairly small. The problem is that "small and "healthy" are not the same. I'm really interested in replacing the fatty areas of my body with muscle (primarily my stomach, lower back and inner thighs). My first priority is to monitor my calorie intake and to make sure I'm eating healthier choices. I've cut out soda (used to drink them about once a day) and replaced it with juice and water over the last 3 weeks or so. The other part is exercise... for the last 4 months i've been biking ~ 1.5 miles a day 3 days a week (to and from school/friends houses), not a lot, I know. I have unlimited access to the gym/exercise equipment, and my goal is to utilize these 3 days/week beginning one week from today (this week is finals!) I know there are stickies but most of them are riddled with technical terms that I'm lost in and they seem to be geared mainly toward men. If anyone could give me some tips on what sort of routin would be good to start off with, it would really help me out. Outside of basic cardio stuff, I don't know much about working out, am I supposed to work on the whole body at once? Just lower body/Upper body at a time? etc. Also, how long should I work on cardio vs. weights? Remember, my goal is not really to lose weight, but to replace the soft fatty parts with muscle. BG on myself: age: 20 y/o female height: 5' 3" weight : 115 lbs 20% BF I do have a prior lower back injury that makes it hard for me to do sit ups or strain my lower back (I thought I'd subsitute these with leg lifts? other ab exercises?) PS: don't ask me for nudes or underwear pics kthanks.