I think the "perfect" size/weight for a woman is where she feels HEALTHY. Some feel better with a little weight on them and others don't. I run from a size zero to a 3 and honestly feel better around a 2. I have a small frame so the extra 5 lbs on me is a huge difference. I don't want to be bone thin but I would rather be on the thin side than the chubby side only because I feel better. I don't really care what guys think.