Mark Spitz
"Mark the Shark" became a household name thanks to his Olympic swimming career. He won nine medals between the 1968 and 1972 Games. He retired from his career at a very young 22-years-old. Instead, he went into show business. Now, at 71, he travels the world as a lecturer.
Kerri Strug
Kerri Strug made national headlines for her insane dedication to the sport during the 1996 Olympics. She gravely injured her ankle during her first vault and fluffed the landing. Her second vault was literally the line between silver and gold. She fought through the pain and landed her vault perfectly on one foot, winning the gold. Her career was done after that and she went to college and eventually joined the U.S. Department of Justice's Office of Juvenile Justice and Delinquency Prevention.