Oh, I keep forgetting to mention this every time somebody starts spouting off about muscle gains in a year or two... In high school, I had lifted weights for football for a few years, and while I worked hard, it wasn't anything special. After my junior year, I was benching 205 and squatting 315. At that point, I began to work out fanatically, lifting for 2-3 hours or so a day, 4 days a week. In a mere 9 months, I increased my bench press to 320 pounds and my squat to 585. (not a typo) All of this was done without the use of steroids, or even the use of supplements or protein shakes. So if I, as an amateur, with no help from personal trainers, nutritionists, etc... can increase my muscle mass by such a huge extent in 9 months, how is it that a man like Sammy Sosa, who is obviously more athletic than I ever was, can't increase his muscle mass by a smaller amount even with access to amenities that I didn't have available?