In July 1969, just before the first manned lunar landing, Life magazine had a special issue about the astronauts. Many of the astronauts were profiled. All of them did some sort of athletics --- running, racketball, etc. --- except for Neil Armstrong, who was quoted as saying (paraphrasing from memory): I believe every man comes into this world with a finite number of heartbeats allocated to him, and I'm damned if I'm going to waste any of mine running around doing exercises.
Then Life magazine was among the misattributors; I read the quote when it was published (and was delighted, because it matched my own attitude about athletics).