atcfootball, a couple of things. I see lots of people say that either a. these guys aren't off the juice because they're not shrinking, or b. some guys never took becuase now there's testing and they're not shrinking. My response to this line of thinking is that people who use testosterone to increase muscle mass do not lose 100% of their gains if they stop taking it. Do you keep it all? No. But you don't go back to gettting sand kicked in your face a month after you stop, either. Also, I understand your using evidence of yourself as the possibility to gain muscle (I use this type of evidence because it's what we know best, oftentimes). Anyway, in this instance it's probably not a good measuring stick when dealing with an elite athlete. Some have said Sosa may have been malnurished when he got to MLB, so let's throw him out of my argument. If we can use Bonds, for instance, I say comparing what me and you can do improvement-wise in the gym naturally is no indicator for for what an athlete can do. These guys, by the time they get to MLB, have very likely lifted weights for years. They also are already at the very high percentile genetically, as far as being fast, strong, etc., just by the fact that they are pro athletes. I would argue that for these reasons, it would be harder for them to see a sudden improvement in muscle mass than it would be for me, who never lifted weights, started, then saw results. Plus, look at age. If you say you gained 18 pounds in Iraq, I might assume you are in the military and maybe less than 20 years old. If that's wrong, this next point won't make sense, but anyway, these guys are making gains in their mid-twenties to mid-thirties and it's much, much harder then because your body is for sure not just still growing. And, like you said, testosterone levels tend to go down as men age. Anyway, it was a good post, but I felt like nitpicking.