Ok, my friend and I have been looking at creatine for a week or so; we are going to wait until the first of the month and buy some from GNC....I asked the guy working there about it and he told me that it helps in muscle growth, makes them store water, which I already knew...Is it that simple? What are the pros and cons of it?, for the record I am also taking the whey protein right now....FILL ME IN!!!