Last updated:聽7 october, 2009 - 12:01 GMT
Wim Hof - Iceman
Wim Hof has an extraordinary ability to withstand extreme cold. He currently holds 15 world records, including one for the longest bath in ice.
In January of this year "the Iceman" completed a full marathon above the polar circle, in temperatures of -20C and dressed in nothing but shorts and sandals!
The former postman talked to Outlook about the challenges he sets himself.
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