Diana Nyad made history in 2013 when, at age 64, she swam 111 miles from Havana to Key West, Fla., in 53 hours.
Still, the fitness icon doesn't expect hordes of people to attempt endurance swimming.
But what most people can do, says Nyad, is walk. Every day. Everywhere they can.
The Los Angeles-based Nyad teamed up with Bonnie Stoll, who managed the support team during the Cuba swim, to start a national walking movement, EverWalk. On Sunday, Nyad and Stoll are doing their first collaboration with gym chain 24 Hour Fitness, inviting anyone to walk with them in Santa Monica and then stay for a cool down...