Hey y'all, I'm Jeremy. I just turned 21 three weeks ago. For the longest time I have weighed the same weight which is about 165-170. I'm 6'3 with a very fast metabolism. I cant gain any weight. No matter what I eat. I'm in good shape but not as built as I want to be. I just started taking p-mag two days ago. I'm taking that and some liver pills. But I feel like I need to know some more helpful advice on bulking up. If you guys could give any feed back. I would really really really appreciate it.