Hell yeah! The stack will literally "amplify" you gains on or off. While on, it will be in a greater scale. But in my opinion, or at least for me, the most impressive help from the stack is when I start using it right after coming off...it is incredible that with the stack you don't notice the transition from being on to a natty level. It keeps your energy high (amplify02), strength high (PureMCC), you loose a little bit of weight from water retention but g-covery gives you those pumps that make you look exactly as on and of course that keeps your motivation through the roof.