Exercise pools have railings along the sides so you can hold on to them while training. Some also have a water lift for those handicapped patients who experience difficulty walking the stairs down into the pool. You need not be a swimmer to take place in this group exercise.Exercise pools have railings along the sides so you can hold on to them while training. Some also have a water lift for those handicapped patients who experience difficulty walking the stairs down into the pool. You need not be a swimmer to take place in this group exercise.