In the pitch-black night, stung by jellyfish, choking on salt water, singing to herself, hallucinating … Diana Nyad just kept on swimming. And that's how she finally achieved her lifetime goal as an athlete: an extreme 100-mile swim from Cuba to Florida -- at age 64.
https://www.ted.com/talks/diana_nyad_never_ever_give_up/
https://www.ted.com/talks/diana_nyad_never_ever_give_up/