hey whats up, im 16 about 135-140, ima junior in high school going into my senior yr and play cornerback in football, im just trying to bulk up a little bit over the summer, i have some GNC weight gainer at home but i havent started to use it seriously yet, i plan on using it soon so i could see some results, i just wanna know if this stuff really works and if it will help me put on some pounds over the summer, my weight room worker told me its pretty good but i just want another opinion, help me out...thanks