True REST(r), also known as Reduced Environmental Stimulus Therapy, is a zero-gravity environment which allows the mind and body completely to let go, relax, then reset. Using 1,000 pounds of Epsom Salts, the buoyancy of the water makes floating on water feel like floating on air. This unique state allows you to instantly relieve pain, relax, heal, and improve sleep by eliminating the gravity pull on the nervous and musculoskeletal systems.