The entire spine is placed in a customized tub that accommodates only the back. The tub is filled with water at the desired temperature depending upon the patient’s condition. It is used for treating back pain due to muscular disorder & spondylosis of the spine, hypertension, and fatigue. It also tones the nervous system, which controls the sympathetic & parasympathetic activity in the body. The water in the tub is the medium that acts on the nervous system when it comes in contact with the area of the body (nerve endings), which has been eventually proven to promote physiological changes in the body, whilst it is used at different temperatures when different effects can be noted.