Blackstone Labs is one of those supplement brands that is really hardcore and you know that what you are taking is going to work in one way or another. This stack is one that will get you big while still making you ripped as well. I would not take this if you are competing in natural division, because the judges will probably say you are too big to be natural. It happened to a friend of mine, but in my opinion that is better than winning the competition. Good stuff, good gains.