Rapiture Muscle Builder Teenage girls need to get the guidance of a knowledgable adult before beginning a bodybuilding program. Look for a natural bodybuilding program developed for girls - not one designed for maximum muscle growth. With a little work, it is possible for you to use bodybuilding as an overall fitness program to achieve a beautiful, healthy, toned body to be proud of. Then enjoy what youve done and the envious looks of all the other girls.