Ace
Evidently, the last nine years haven’t been kind to all of them, but consider this: they likely continue to work out and stay in shape, but they were required to perform at their peak performance level at all times while on the show. If they fell short, there were always substitutes available. Thus, it was either dominant or fall behind the line.
Hunter
It’s difficult to compare how some of them turned out to how they appear now, but you have to believe that some of these individuals were not springing chickens when they took on this job. They’re probably in their late thirties and forties now.