Hi, my name is Eric. I am sort of new into the world of weight training. So I have a questions in my mind that I want to ask. First thing first, I am 20 years old, 5'8 and I only weigh 120 LBs, and I have a bowflex at home. So what I'm trying to do this summer is gain mass and muscles. But I just want to ask what are some protein shakes or supplements that I could take that could help me gain mass. And also, I have a bowflex at home, I was wondering what kind of exercises that best suit for me. Thanks