Why this list is so famous
For a long time Wim Hof was mostly seen as a man who did strange things in the cold. Until researchers at Radboud university medical center in Nijmegen started testing him. In 2014 they published a study in which volunteers who had learned his method reacted less strongly to an injected bacterial toxin than a control group.
How big that effect really is and how it works, scientists still don't agree. But the list itself is rock solid: five steps, once a day. The hardest part isn't even on it. That's simply starting again tomorrow.
Pillar three
Anyone can take a cold shower once. The hard part is day two. Write down in a note in Stipp why you started, and turn it into an action today. Tomorrow another one. You tick off the action; the note stays and still knows why you're doing it.