A question most often asked by those who are just getting started in bodybuilding, especially those who are teenagers, is which supplements are best for gaining weight quickly and for bulking up. Assuming that all of the rules that are presented in my Weight Gain And Bulking Up Rules For The Natural Bodybuilder article, are being followed, then the supplements presented in my Top 7 Weight Gain Bodybuilding Supplements Guide will be of great help to those who are looking to gain weight and bulk up as quickly as possible.