Born on April 20th 1959, Wim Hof was born with an innate 'immunity' to the cold. His signature act was staying immersed in ice for 1 hour, 52 minutes and 42 seconds. He has also demonstrated his endurance by climbing Mount Kilimanjaro in only his shorts! He attempted to climb Mount Everest, only to be halted by a foot injury. He claims that he is able to change his body temperature, which has been proven to be true.