Ran a barefoot half marathon in -30 degrees Celcius in Lapland. And many more. He has collected 20 Guinness World Records over the years.
Wim Hof showed his extraordinary abilities to Radboud University were he showed scientifically that he can influence his Autonomic Nervous System and Immune system at will.
Something that Science thought was not possible. Wim practically re-wrote the science books.
The method he invented to do this is known as the Wim Hof Method.