as some of you know this product is very powerful, some guys at my gym used to run this a few years ago, and they were the biggest guys at my local gym , I was able to find a guy online who sells it, the description of the product online states it can make gain 20 pounds of solid muscle in a 30 day cycle, I mean it sounds too crazy to be truth but is it really powerful to at least make you gain half of that in 30 days? about 15-20 pounds? any previews users here? thank you.