Water, health and Sebastian Kneipp
This insight did not come about by chance - after all, the son of a Bavarian weaver was already able to convince himself of the health-promoting effect of water as an adolescent. Kneipp had been suffering from tuberculosis for over two years when he came across a book on the effects of water in 1849. According to this book, cold water in particular is healthy and helps against a wide range of ailments.