Daniel-
Good stuff. Clarence Bass had another piece on a guy, Roy Hilligan. Vegetarian...and complete bad-ass. Consistency of training, clean diets...I was going to say not over achievers on the athletic front but LaLane kinda throws a wrench in that!
These are some good generalities but I'm just curious if decreasing glycolytic flux, intermittent fasting and some other approaches add to this? Here are some photos of people aging well...Hilligan photo included:
http://www.legendaryfitness.com/PicsofMonth.htm