Synopsis: Martin Strel isn't your usual athlete. He's a big-bellied Slovenian, who eats horse burgers, drinks two bottles of red wine a day (even while swimming) and, when he tackled the Amazon in 2007, was 53 years old. Martin swims rivers to bring attention to their pollution. Prior to the Amazon, he had conquered the Danube, Mississippi and Yangtze, earning Guinness World Records for all.