The Way of the Iceman: How the Wim Hof Method Creates Radiant Long-term Health—Using the Science and Secrets of Breath Control, Cold-Training and Commitment

by Wim Hof

And what most appeals to him is the idea that Vajrayana is a religion based on experience, not faith. It is about experiencing, not believing. Every proposition can ultimately be checked against your own experience. One of Wim’s favorite one-liners is: “feeling is understanding”. And that’s exactly what the Tummo techniques encourage.