Bruce Jenner might be the world's most famous ... From his 10th-place finish in the decathlon at the 1972 Games until the 1976 Olympics, he trained, on average, eight hours a day.

And if Caitlyn Jenner did, must history be rewritten? Is every source that refers to “Bruce Jenner ... “As a result of winning the Olympic decathlon, Jenner was a national hero.