This and the Brad Pitt posts have been discussed so many times. I suppose for the last time I will chime in. After this, I will just leave these to the dogs...
Vin Diesel has taken anabolics. He has openly discussed it in interviews. The most recent was on BET for The Fast and the Furious last year. It doesn't show these days, but if you look at Saving Private Ryan and Pitch Black, he was easily carrying about 20lbs more on him. These days I wouldn't be suprised if he is 210. In XXX there are two Russian guys that make him look like he is 5'10 or so. So I doubt, 6'2 that he claims. So a 5'10/5'11 guy with chicken legs could easily have his build at 210.
Honestly 5'10 or 6'2, 200 or 250, with the money he makes, and the life he now leads, I doubt there are many people who wouldn't trade places with him.