
He did not walk past.
At seventeen, a boy in Amsterdam walked past a canal in winter. He did not walk past. The water closed over him like a door, and on the other side of that door was a quiet he had never known.
Take three breaths.
Then decide.
You will breathe in, fully, thirty to forty times. You will let the last one go and simply stop. What happens next is not a trick and not a belief; it is your own nervous system, answering.
Light-headedness, a tingling in the fingers, a warmth that arrives from nowhere — these are the ordinary signs of an extraordinary shift in your blood chemistry. They pass. What stays is the knowledge that you can reach in and change the weather inside you.
Breath. Cold. Mind.
Three practices, one method — each simple enough to begin this morning, deep enough to spend a lifetime inside.
For years, no research institution would take him seriously.
In 2011, a hospital in Nijmegen agreed to inject him with a bacterial toxin that makes healthy people sick for a day. He breathed. The fever never came.
Three years later, twelve ordinary volunteers learned what he did in ten days. Their adrenaline rose, their inflammation fell, and they walked out of the endotoxin ward feeling almost nothing. It was published in the Proceedings of the National Academy of Sciences.
The claim was no longer that one Dutchman was special. The claim was that you are not as fixed as you were told.
Learn the method. Live the residence. Earn the experience.

The Method
Free lessons, guidebooks, courses and the app — the breath and the cold, taught the way Wim teaches them.

The Residences
Centers today; Cold Houses, flagship residences and one permanent sanctuary tomorrow. Not a retreat. A home for the practice.

The Experience
Twenty-seven journeys where the method returns to its habitat — real ice, real mountains, and a feast at the end of every hard day.
Pull a king crab from beneath the ice with your own hands.
Walk at midnight under an aurora at the top of the world. Climb the mountain he climbed in shorts. Sit in the dark of a Mayan cenote and find out how still you can be.
All twenty-seven experiencesOne life, drawn as a line.
Sittard. Amsterdam. A waterfall in Poland. The death zone on Everest. The summit of Kilimanjaro in two days. A desert marathon without water.
Every place on this map is now a journey you can take — retraced, staffed by certified instructors, and ending, always, with a feast.
Every point is a page in the Records Hall and an experience in the catalog.
30 Days
of Cold
Your name on the cover.
Your date on the spine.
Every copy is personal: your name, your start date, and a plan that updates as new chapters ship. Chapters one to three arrive the moment you sign up. Chapters four to six unlock after seven logged practice days — because reading about cold is not the same as meeting it.
Why the cold works
The science in plain words — and what to honestly expect.
The breath protocol
Three rounds, step by step, with the printable card.
Days one to ten: the taper
Your shower plan, degree by degree. Safety first, always.
Days eleven to twenty: staying in
Unlocks after seven logged practice days.
Days twenty-one to thirty: the vow
Unlocks after seven logged practice days.
Beyond: ice, lakes and experiences
Unlocks after seven logged practice days.
Get your guidebook
Your name on the cover. Your date on the spine. Three chapters now. Three you earn.
Check your inbox — it is on its way. Welcome to the cold.

This is not a temporary retreat.
This is a permanent residence.
Learn the method. Live the residence. Earn the experience.