Lance Armstrong relied on the short lifespan of performance-enhancing drugs in the bloodstream to evade anti-doping testers for years, he has said.
Armstrong was stripped of his seven Tour de France victories and banned from cycling for life for his prolific doping, after eventually coming clean in a 2013 interview with Oprah Winfrey following years of rumours, accusations and denials. He paid $5m to the US government in a settlement following a $100m federal indictment built on the testimony of whistleblowers including his former teammate Floyd Landis.
