Decades before Wim Hof, he immersed himself in ice from the neck down and sat there motionless for 55 minutes. Later, he ran 150 miles beneath the searing sun of the Sahara desert. At 71, he toured the Himalayas on his bike at an elevation of 16,500 feet. But his greatest feat, Daubard said, was helping thousands of others with illnesses learn the power of Tummo to heal themselves, just as he’d done.

