Haha. Is he talking about this dude?:

Wim Hof ([ʋɪm ɦɔf]; born 20 April 1959), also known as The Iceman, is a Dutch motivational speaker and extreme athlete noted for his ability to withstand low temperatures. He previously held a Guinness World Record for swimming under ice and prolonged full-body contact with ice, and holds a record for a barefoot half marathon on ice and snow. He attributes these feats to his Wim Hof Method (WHM), a combination of frequent cold exposure, breathing techniques and meditation. Hof has been the subject of several medical assessments and The New York Times bestselling book What Doesn't Kill Us written by investigative journalist Scott Carney.

https://www.youtube.com/watch?v=tybOi4hjZFQ