In his book, an autobiography called "On the Run", he claims to have never gone to the movies for fear of injury by keeping his legs in a cramped position. He never went to his high school prom for fear that a late night would ruin his season. There were lots of other extremes described in the book that display his belief that "the most insane person will win the race". Interesting that he constrasts sharply to Steve Prefontaine who went out partying and drinking like any other person.