Women often train with light weights and multiple repetitions believing that this will result in toned, sculpted muscles and avoid creating "bulk." While this does enhance the ability of your muscles to lift light weights for more and more repetitions, it does not build muscle. In the book "The New Rules of Lifting for Women," fitness expert Lou Schuler points out that if you use weights that are unchallenging, your muscles will not grow. If you do not build muscle, you have nothing to sculpt and will not look lean and toned. Women, for the most part, do not have the muscle fiber size and type or the testosterone that creates "huge" unfeminine muscles.