Hydrotherapy
  Hydrotherapy, formerly called hydropathy and also called water cure, is a branch of alternative medicine (particularly naturopathy), occupational therapy, and physiotherapy, that involves the use of water for pain relief and treatment.
   Hydrotherapy is the external or internal use of water in any of its forms (water, ice, steam) for health promotion or treatment of various diseases with various temperatures, pressure, duration, and site. It is one of the naturopathic treatment modalities used widely in ancient cultures including India, Egypt, China, etc.
Hydrotherapy may include:
• Physical therapy tanks.
• Swimming pools.
• Whirlpool spas.
• Hot tubs.
• Saunas.
• Showers.
• Baths.