Crazy stack is Crazy!
Honestly, I was pretty skeptical about the products. I tried the products and after the first 2 weeks...barely gained a few pounds, but kept taking it per the recommendation. Worked out 4 times a week and after 1 month, I noticed I was pushing 30 more lbs on bench. Ended up gaining 15-20 pounds of mass. Pretty expensive, but overall I think it's worth the money.