Anti Drop 16g Copper Plated Dart Needle Hard Dart 16g Baili Dart Needle Set 15cm Long Peculiarity: Use: Special darts for hard dart targets Total length: 155mm Thread inner diameter: 6mm Escort head: Steel needle Dart body: Iron copper-plated Dart bar: Plastic Dart Wing: PET Dart tube weight: 14g Whole weight: 16g Basic knowledge of dart sports physiology! & nbsp; 1. Darts exercise is a systemic exercise that has a good fitness effect in the office and is the bane of modern office diseases. 2. Compared with archery and shooting, darts are obviously different. The latter is static aiming, the muscles stretch to a certain extent and remain static, and the capillaries do not dilate. Long-term exercise may cause occupational diseases, while there are moving parts and static parts in the darts movement, and the amount of exercise is not large and can be adjusted, which can not only exercise, but also eliminate fatigue. & nbsp; 3. Dart sports are also a group sport that benefits mental health and can provide a social stage for modern people. & nbsp; 4. The dart movement mainly involves the muscles and links involved in and contracted, including fingers, wrists, elbows, shoulder joints, deltoid muscle, triceps brachii, wrists, fingers, etc., especially for the training of some smaller muscles that seldom exercise at ordinary times. The amount of exercise is not large and can be adjusted, and taking darts back and forth is also a good exercise process. & nbsp; 5. To exercise eyesight, dart sports require rhythmic targeting and relaxation of the eyes, which is beneficial for relaxing the eyes and alleviating eye muscle fatigue. 6, dart movement can improve the ability of nerves to accurately control muscles, this ability to a certain extent will not grow, high-level darts, three darts can be controlled within 1cm2, there are innate factors, but through exercise can be effectively improved. & nbsp; 7. Dart sports are competitive, highly confrontational, and also have a strong sense of leisure and entertainment. They can adjust psychological state and improve psychological quality. 8. Dart movement can adjust the balance between the left and right brains, that is, the balance between logical thinking and spatial control.