Wim Hof "Iceman" definitely gives me "cult leader" vibes but cool to see this research get published in a very reputable scientific journal.
One thing that compelled me to look into it was how little he seems to want money for his efforts. I mean, he makes money off of his name, but the iOS app for example is well made, helpful, and costs something like $2 CAD for advanced features. Admittedly the features are not exceptionally advanced, but I was expecting a higher price tag. It seemed like a reasonable ‘cover dev costs’ fee.
He’s on some podcasts of course, and you can get a decent sense for what he’s like. My creep meter doesn’t go off much with him, personally.
For what it’s worth, I’ve been using (and enjoying) wim hof techniques for a while and my assessment is definitely biased.
I left this comment earlier because it seems like there are genuine risks to this sort of thing, but I must be wrong since no one is highlighting them:
A couple good resources for you to check out if you're interested. Scott Carney does the best job of dispelling Wim as his original intent was to basically shine the light on Wim's snake oil in "What Doesn't Kill Us" [0] (spoiler: that is not the end result). Scott recently released a new book called "The Wedge" [1] that incorporates some of Wim but a lot of other practices and people that fit into the idea that we have more control than we realize and getting out of our comfort zone has healthful benefits. Being in 100% climate controlled perfect environments doesn't always help us. The other one I'd recommend is James Nestor's new book called "Breath" [2].
[0] https://www.scottcarney.com/what-doesnt-kill-us [1] https://www.scottcarney.com/the-wedge [2] https://www.mrjamesnestor.com/breath/