Do not worry about that and just eat protein and get muscle. That is what is the best! I have lots of muscle and wear petite and slim. Soy and protein shakes are great, fresh foods and things like power and balence bars taste great, are great, you look great although the prices can be a bit high. It is well worth it and you live longer! So stop worrying because protein sucks the fat right off you and you look and are great. If you are like me and bicycle & climb a lot then it also can come of help there. Give it a try today!