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Before launching into any sport, it’s important to know three things: the rules, the stakes, and when to quit. In the case of Diana Nyad, the resolute 64-year-old long-distance swimmer, acknowledging two out of three ain’t bad.
On August 31st, 2013, Nyad jumped into the shark-friendly waters of Cuba and swam some 110-odd miles—without the protection of a shark cage—to eventually reach the shores of Key West, Florida, some 53 hours later.
