Aqua Therapy / Hydrotherapy Aqua-Therapy, physical therapy is performed in a warm-water pool, allowing for earlier intervention, greater tolerance of activity, and easier gains in range of motion with less pain. Aqua therapy can benefit any type of rehabilitation, especially for individuals who are not yet ready to perform exercises affected by gravity and weight-bearing tolerance. Aqua therapy reduces impact on joints, helps improve overall body strength and conditioning during post-rehab, and aids individuals who have weight-bearing problems, such as back pain. The buoyancy of the water reduces the stress of body weight on a particular area of the body.