- This is the best book on the subject. "Test urine therapy" Christian Tal Schaller is also reading for a complete view of the subject. This book presents methods, reports the testimony of people practicing this method with the results obtained and shows the diseases and health problems that can be treated or improved. This method has existed for over a thousand years and is practiced by millions of people around the world. I practiced myself for over a year. The urine gives you energy and relaxes you. Try it and you will be convinced.