This is the first stack I've used where the results are obvious. I've put on 10 pounds in two months, my co-workers and my wife have all made comments about my gains (some implying that I'm juicing). My gains also feel much more permanent than ever before. I am at my peak, I am stronger than I have ever been and feel like I'm just at the beginning. The taste is pretty horrible, though. I'm going to make this kit part of my routine.