Hydrotherapy is the use of water to revitalise, maintain, and restore health.
Wikipedia - Hydrotherapy, formerly called Hydropathy, involves the use of water for pain-relief and treating illness. The term hydrotherapy itself is synonymous with the term water cure as it was originally marketed by practitioners and promoters in the 1800s. Many medical practioners and specialists today, will recommend hydrotherapy for all types of rehabilitation. When used in conjunction with the jets and the warm water in a spa, the healing properties intensify and your spa becomes the perfect place to rejuvenate those overworked muscles or help relieve the pain associated with other ailments. Hydrotherapy is also perfect for relaxation, and therefore your spa becomes the perfect tool to relieve stress.