@matigo the book I’m reading right now is called Breathology. The author is [giving it away in PDF form](https://www.breatheology.com/free-ebook-covid-19/). Nice adjunct to the Wim Hof stuff I’ve recently read.

@matigo the book I’m reading right now is called Breathology. The author is giving it away in PDF form [breatheology.com]. Nice adjunct to the Wim Hof stuff I’ve recently read.