[Fitness ball abdominal and back exercise] mainly exercises the back muscles.
Action essentials: Face down, lie on the fitness ball, the part in contact with the fitness ball is below the waist and abdomen, cross your hands on the chest, use the abdominal and back muscles to lift the body as high as possible, and finally lift the body as high as possible. In standard movements, your body forms a diagonal line.
Don’t do this: Don’t be lazy and relax your arms, and don’t touch the fitness ball with parts above the waist and abdomen. This will reduce the effect of exercise and fitness.