Most Americans still regard hydrotherapy as nothing more than a relaxing soak in a tub. Many day spa owners acknowledge that their clients’ primary reason for visiting spas is to de-stress and enjoy a momentary escape and create spa experiences tailoring their services to meet the needs—and expectations—of their guests. Hydrotherapy is the use of water in the treatment of disease. The use of water for therapy has been around for hundreds of years, as far back as the ancient Greeks and Romans, and forms an integral part in many traditional medicine systems. By most definitions, the word “spa” stands for sanitas per aqua, meaning “health through water.” “I believe.