Weight Gain Network is a website dedicated to helping skinny guys (ectomorphs) build serious muscle mass and gain weight quickly since 2010. Jeff Masterson used to be a skinny guy but through a ton of research and trial and error, Jeff has gone from a skinny and weak 142 pounds to a strong and muscular 205 pounds at 8% bodyfat. Now Jeff uses this YouTube channel to bring you tried and tested advice for gaining weight and building muscle.