Diana Nyad sits down with Nyad Chief Medical Correspondent Dr. Diana Nyad . `` You are never too old to chase your dreams , '' she says after 53-hour swim . Last year , she abandoned an attempt about halfway through after severe jellyfish stings and a lightning storm put her in danger . Nyad becomes first person to swim from Florida to Cuba without shark cage . This was Nyad 's first and final attempt to make 103-mile swim .
Diana Nyad sits down with Nyad Chief Medical Correspondent Dr. Diana Nyad . `` You are never too old to chase your dreams , '' she says after 53-hour swim . Nyad becomes first person to swim from Florida to Cuba without shark cage . This was Nyad 's first and final attempt to make 103-mile swim .