The Wim Hof Method: Activate Your Potential, Transcend Your Limits
ISBN: 1846046297
Buy on Amazon
Found in 1 comment on Hacker News
thorin · 2022-04-29 · Original thread
You could start by reading his book, which explains enough to get started

https://www.amazon.co.uk/Wim-Hof-Method-Potential-Transcend/...

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