I need some help with finding out what sups i should take to help increase. I am 6'2" with long arms and legs, i weigh about 200 lbs and i have a hard time gaining mass. I am currently taking creatine with , and in it and it only seems to help my muscle recovery time, i also drink a protein shake after workouts. I have been thinking about taking , and BCAA's but i am unsure. I don't want to take any thing that will mess with my testosterone or other hormone levels. Any help?