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From being attacked by Pirhanas in the Amazon or contracting infections in the world’s most polluted river, Martin Strel doesn’t take failure lightly. He’s swam the world’s longest rivers and at 62 years-old, Strel is not done yet.

*Video courtesy of UPROXX

Barclay Idsal is a seasoned writer and digital content producer with over a decade of experience in the ski industry, where writing and skiing rank as his two all-time favorite pastimes. A passionate advocate...