Ylyycc Luminous Wrist Ball Power Gyro Wrist Ball for Forearm Exercise Perfect warm-up exercise equipment, especially suitable for sports people, such as golf, tennis, squash, cricket, badminton, baseball, bowling, basketball, racing, and other use your wrist outdoor climbing mountains and so on movement . Enhance the holding POWER of fingers, wrist, endurance and forearm, biceps, triceps, ligaments and the POWER of the shoulders For many music performer, such as piano, guitar, drums, finger ligament of toughness, avoid ligament damage. At the same time can also help the recovery of muscle and ligament injury Apply to the people in the office, for a long time in office, abdominal compression, limb numbness, less activity, blood circulation, oxygen supply is insufficient to make cerebrum offers blood, can appear dizziness, chest tightness and fatigue symptoms Teenagers use can promote bone growth and the growth of the brain, can finger flexibility training, to learn calligraphy, fine arts, Musical Instruments have certain help Old people often use, can activate the hands of the six meridians, promote the blood circulation, prevent cardiovascular and cerebrovascular diseases, reduce blood fat, strengthen the function of intestines and stomach, increase appetite, awake brain intelligence, eliminate weakness, fatigue, promote sleep, delay the aging of the brain. To achieve health care function, type and the upper limb rheumatoid arthritis, periarthritis of shoulder have certain curative effect