Not about cold plunges, as I'd expected, but interesting nevertheless. The author of the book reviewed also wrote one of the best (and my personal favourite) bo

Not about cold plunges, as I'd expected, but interesting nevertheless. The author of the book reviewed also wrote one of the best (and my personal favourite) books on The Reformation: https://en.wikipedia.org/wiki/The_Reformation:_A_History https://en.wikipedia.org/wiki/The_Reformation:_A_History