The benefits of playing fitness ball for the elderly have long been popularized in China and are well known to the public. As a very popular fitness equipment in China, fitness balls are made of various materials, such as marble or granite, stainless steel, copper, etc. Some of them only use two or three walnuts as balls, which is very suitable for elderly friends to exercise. Because of its small size, it is very convenient to hold it in your hand. You can exercise while walking, watching TV, sitting still and talking. As the saying goes, "ten fingers connected to one heart" means that 10 fingers are closely related to the function of internal organs of the whole body. The ancients believed that there were some very sensitive acupoints in the tips and palms of these fingers. Stimulating these acupoints, information can be transmitted to the corresponding organs through meridians, affecting the whole body. When the elderly play with the fitness ball in their hands, they can constantly stimulate the acupuncture points distributed in the palm, back of hand and fingers, activate local meridians and make blood flow. At the same time, by playing fitness ball for a long time, the elderly can flexibly flex their fingers, palms and wrists, promote the movement of upper limb muscles such as fingers, wrists and elbows, and prevent and correct symptoms such as numbness, trembling and decreased grip strength of upper limbs caused by degenerative diseases of the elderly. Moreover, hand movements are also very beneficial to the brain. When people play fitness ball, they can concentrate their thoughts on their hands, eliminate all kinds of distractions, eliminate tension and relax their brains. According to experts of ancient Chinese medicine, playing fitness balls regularly can also effectively protect the brain, slow down the aging of the brain and avoid the occurrence of Alzheimer's disease.