Many of the nerves inside and around the wrist and hands are directly connected to the brain. When you use a stress ball, it activates the nerves and muscles, making them stronger. This, in turn, improves the performance of the nervous system and reduces and limits the hormones that control stress and tension levels. Recovery from Injuries Some therapists suggest using a stress ball for those recovering from any type of physical injury because it uses vital muscles that aid in movement. A stress ball can also help prevent and repair daily injuries that require you to use your hand a lot. Using this ball can also improve flexibility in your hands. Exercise for All Body Muscles A stress ball not only affects the tension muscles around your wrist and arm area but also provides a simple exercise for all your body muscles. This is because the nerves in the body are interconnected, and this stimulates all the body's nerves, meaning it represents an exercise for all body muscles. Medical elastic stress balls, very good, new For 230 pieces Price 5 riyals per piece Price 5