When I was in high school, my friends would lift for football all the time. All of them would take creatine. When I asked my dad about it, he said its basically crap that just makes your muscles look bigger by filling them with excess water. At the time, my father had been lifting for years and was a big guy. To this day I really don't know anything about Creatine. I have read in a few threads here that Creatine is one of the more important suppliments. Could anyone please explain to me what it does, and the pros and cons of using it? I'de appreciate it.