Forrest Gump, Tom Hanks (1994)
Forrest Gump is underrated as a fitness freak in film history. Forrest paved his way to an active life by running his way out of the braces on his legs, making viewers wonder why they were there in the first place. His impressive running skills eventually land him a football scholarship at the University of Alabama, where he plays well enough to be named to the All-American team. After joining the army and going over to fight in the Vietnam War, he carries a bunch of his wounded buddies in the midst of a battle to safety before an American air strike comes down on them. After being injured in combat, he starts playing ping-pong and also happens to have enough skill at that to represent the country, playing it internationally. Then, finally, and possibly most impressively, he eventually decides to just constantly run for no reason, across the country and back several times, for “3 years, 2 months, 14 days, and 16 hours” straight, stopping only to eat and sleep.
It’s all definitely farfetched (and there are way too many corny historical jokes along the way), but so are most movies. Forrest definitely goes down as one of the fittest movie characters ever.