The Golden Boy

Michael Phelps swam into history at the Beijing Olympics and now the 23-year-old phenomenon tells CNN's Anderson Cooper how his life has since changed.

What happens after you win an historic eight gold medals in a single Olympic Games? Only one person in the world can answer that question: Michael Phelps.

Since Beijing, Phelps has enjoyed his longest break from training ever. He's on a victory lap of sorts, touring the country and building the Michael Phelps brand. He let us tag along with him, and gave CNN's Anderson Cooper his most extensive interview since the Olympics.

He explains how he won in Beijing, how he almost didn't, and what life is now like for an unassuming 23-year-old swimmer who's also the greatest Olympic athlete ever....