Lance Armstrong has finally confessed to using performance enhancing drugs during his cycling career. He also admitted that he cheated to win all seven of his Tour de France titles. Armstrong revealed his secrets in an interview with US talk show host Oprah Winfrey. Yesterday, hours before the interview went to air, the International Olympic Committee stripped him of the bronze medal he won at the 2000 Games.A cancer survivor who inspired millions with what had seemed like a fairytale career, Armstrong said he did not believe he could have achieved what he did without breaking the rules due to the culture of drugs in cycling.Armstrong's admission came just months after the U.S.Anti-Doping Agency released a detailed report describing him as the ringmaster of the most sophisticated, professionalized and successful doping program that sport has ever seen.While he confessed to cheating and bullying, he denied several of the other accusations that have been made against him.Armstrong has already been banned for life, stripped of his all race wins and dumped by his sponsors.