Shark muscle is a stronger muscle type. In the field of fitness, shark muscle usually refers to the muscle groups of chest muscle, back muscle and shoulder muscle. The development of shark muscles requires long-term exercise and training, which requires great efforts and persistence. For fitness enthusiasts, having strong muscles is an achievement and pride, and it is also a symbol of health and strength. It takes a lot of effort and persistence to develop shark muscles, which is the achievement and pride of fitness enthusiasts.