Wim Hof first caught the attention of scientists when he proved he was able to use meditation to stay submerged in ice for 1 hour and 53 minutes without his core body temperature changing. Since then, he’s climbed Mount Everest in his shorts, resisted altitude sickness, completed a marathon in the Namib Desert with no water and proven under a laboratory setting that he’s able to influence his autonomic nervous system and immune system at will. Almost everything Wim has done was previously thought to be impossible – but he’s not a freak of nature.