Stress Relief
Hydro massage has been shown to reduce physical tension and mental stress. Immersing the body in warm water may reduce the secretion of cortisol and other hormones associated with stress. A study conducted by Washington State University's Bruce Becker, M.D., showed that soaking in a 102 degree F tub for 25 minutes produced relaxation and an accompanying decrease in anxiety.

Improved Sleep
Hydrotherapy can help reduce insomnia and promote restful sleep. This may be because the body's internal temperature rises during hydrotherapy, then drops afterward. The internal temperature drop cues the body to get ready for sleep. Hydrotherapy can also improve sleep by relieving pressure on the body's joints and muscles, which reduces nighttime discomfort.

Pain Relief
Hydrotherapy sessions may help reduce chronic pain caused by arthritis, fibromyalgia and other conditions.The warm water improves circulation, which delivers oxygen and vital nutrients to muscle tissues. Water immersion also reduces the body's weight by up to 90 percent, taking weight off the limbs and joints. The water jets used in hydromassage therapy may also provide healing benefits by massaging injured, tense or sore areas.

Cardiovascular Rehabilitation
Water immersion and hydro massage may be a useful tool for people who have heart conditions.Hydromassage can increase the heart rate without a corresponding increase in blood pressure. It can also increase the efficiency of the heart's pumping muscles, says Dr. Bruce Becker.