As a former female bodybuilder that is getting back into the lifestyle after a couple kids, LIFT HEAVY WEIGHTS! If you overdo cardio and fitness lifting (high reps, low weight), that's when you have to worry about looking like a skinny rag doll. Eat primal, lift heavy with low reps, and enjoy the transformation. Take your time easing into the weightlifting until your tendons have strengthened and make sure you work your core. Forget all that toning shit they feed women!! You're NOT going to look like a guy if you lift heavy...you're going to have those curves you're after!