The soothing properties of water appeal to those in search of treatment that can heal the body while improving rehabilitation timeframes, fitness levels or reducing overall stress levels. Aquatic exercise like swimming or water aerobics does not need to be supervised by a trained professional. Exercises can involve accessories such as stationary bicycles, flotation rings or belts, weight-adjustable barbells, ankle weights, short-tipped fins and flippers, resistance bands and tubing, resistance hand bells and paddles, kickboards, or noodles. Aquatic therapy, also known as water therapy, aquatic rehabilitation, aqua therapy, pool therapy, therapeutic aquatic exercise or hydrotherapy, is different from aquatic exercise or aquatic fitness because it is a physical medicine and rehabilitation specialty that requires the involvement of a trained professional. There are multiple types of aquatic therapy pools, ranging from small pools for single client use to large pools intended for group workouts. Therapists use cold-water plunge pools to speed muscle recovery in athletes and reduce joint inflammation. Hot-water plunge pools are used for relaxing muscles.