Six-time Olympic gold medalist reveals he is suffering from cancer. The 47-year-old says he wants to keep the diagnosis a secret.
"I can't wait to be back on the bike," he says of his return to the track. He won gold in 2004, 2008 and 2012 at the Olympics in London. He also won a gold medal at the Commonwealth Games in Glasgow in 2010. He has also won two gold medals at the World Championships in Beijing in 2008 and 2010.