Abstract: Kneipp-Hydrotherapy is not only known as a cold water therapy but is an essential part of Kneipp's concept of physical therapy and wellness. This concept is described as: Hydrotherapy, Diet and Nutrition, Exercise and Fitness, Aromatherapy and Herbology, Wellness and Proper Lifestyle. Kneipp-Hydrotherapy is presented as a well defined systematic and highly effective therapy tailored to each individual's need. The author describes the various forms of warm and cold hydrotherapy application and their effects on the vascular system. It is demonstrated that this form of hydrotherapy is suitable to almost all physical conditions and adaptable to all forms of indications.