Michael Phelps may be the fastest swimmer alive, but when it comes to being the strongest, he has nothing on this old man.

Martin Strel is a 62-year-old overweight swimmer, but what makes him special is his five Guinness World Records in the field of marathon swimming.

 This remarkable man has swam the entire length of the Amazon, Danube, Mississippi and Yangtze rivers, while facing dangerous animals such as piranhas, pollution and various diseases from his exploits.

Like other ultramarathoners, this freak of nature has the special ability of disposing lactic acid from his body, giving him the superhuman resistance from fatigue.

Amazing isn’t even enough to describe him.

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[Source: Youtube]

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