I've been meaning to link to this young lady's tumblr for a while. She seems like a super smart woman who lost a good amount of weight and promotes all kinds of good stuff--like healthy body image--and she does a good job of explaining why strength training is good for women and good for weight loss. This person also breaks it down quite nicely. It's a review for a BodyBugg, which I do not own, nor endorse (although it does seem kind of neat!)