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A comment on Wim Hof’s teachings about breath work and the health benefits of cold plunges. Parent comment

Re:Wim Hof’s teachings about breath work and the health bene... by isleyaardvark on Thursday October 15, 2020 @08:06AM (#24787686)
The top review has me concerned, it claims the book says plants exchange oxygen for carbon dioxide and that deoxygenated blood appears blue, both of which are incorrect. Does the book really say that?
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