I’ve just finished reading David Epstein’s excellent book The Sports Gene, a fascinating exploration of the research on genetic and physiological factors that may contribute to exceptional athletic performance. Ironically, I got the book only a few weeks before I saw the fascinating Alex Gibney documentary The Armstrong Lie, which was intended to be about Lance Armstrong‘s 2009 return to competitive cycling in the Tour de France, but instead ended up being about Armstrong’s secret use of performance-enhancing drugs. Clearly anyone who takes PEDs is trying to gain a physiological advantage in competition, but watching Armstrong’s behaviour in the film made me wonder about another factor in exceptional athletic performance: (more…)