Michael Phelps swam into the history books at the 'Beijing Olympics' and sat down with '60 Minutes' to talk about how his life has changed since.
Among other topics, Phelps talked about how a mistake by runner-up Milorad Cavic of Serbia in the 100-meter butterfly allowed him to tie Mark Spitz -- in what was his closest finish.
"He's picking up his head, so it's acting like a speed bump," Phelps told Cooper of the finish. "So he’s coming up and then trying to lift his head before he touches the wall... my head is in a straight streamline. So that's the difference in the race."
"If his head is down, he wins... hands down, wins the race."
Phelps also said he eats 8,000 to 10,000 calories a day during training -- not the reported 12,000 -- but its not easy keeping up his appetite: "I have to always just constantly shovel food in because I can lose anywhere from five to 10 pounds a week."
He will start training for the 2012 London Games in January.
Check out the full 12 minute Michael Phelps '60 Minutes' interview below, which includes Anderson Cooper in a short race against the Olympic champ.