No man is better associated with temperature extremes than the Dutch “Iceman” Wim Hoff. He earned his nickname by not only breaking world records for prolonged cold exposure (swimming under ice, barefoot marathon running over snow and ice) but nearly single-handedly making cold exposure popular.

“The Wim Hof Method” has become a bona-fide movement in the world of biohacking and his name is everywhere these days. He has been the subject of a bestselling book as well as a Vice documentary. This is a man who climbed Mount Everest in only shorts and shoes (coming just shy of the peak due to a foot injury). He also managed to climb Kilimanjaro in two days while in similar attire.

So what does Wim Hof credit his health and mental endurance to? Wim Hof believes that enduring the cold is a benefit to our bodies and can help us deal with disease such as MS, arthritis, and other ills. His method involves a combination of meditation, breathing exercises, and ice therapy.

So you may be asking yourself,does the Iceman like the heat? It turns out he is a big fan.