Don't forget his phsyiology is perfect for the race.
Lance Armstrong's War: One Man's Battle Against Fate, Fame, Love, Death,
Scandal, and a Few Other Rivals on the Road to the Tour de France
(Hardcover)
"The best part of the book was the physiology part regarding Lance, his body
type and the attributes he has that has allowed him to repeatedly win the
Tour. It was this scientific look at the kilowatts he generates per stroke
of the pedal, the fact that his body does not produce lactic acid on the
scale of the normal person, how his lungs are more efficient as well as his
heart, etc., that I personally found to me the most interesting. The author
also deals with the steroid controversy, its authors and how Lance deals
with it and the repeated testing he is subjected too."
http://www.amazon.com/gp/product/0060734973/104-2416107-0423925?v=glance&n=283155