Muscle tremors occur during exercise, which can happen to almost anyone. From a professional point of view, tremors may be mild to extreme, and any muscle of the body may be affected, including legs, abdomen and arms. When the weather is tense, the tremor may be out of control. At the same time, it will happen during the rabbit's exercise break, and there will be symptoms such as fatigue, muscle spasm and decreased performance. If the vibration is serious, you may collapse! Our chicken has been working, and the result is like a rubber band. If you grow it, it will grow, and if you don't pull it, it will shrink back. It is related to your nerve cells and muscle fibers. Whether you like sports or not, your every move is closely related to your muscles. When you stand between doctors and want to open the door, you need the perfect cooperation of your brain and muscles to help you achieve your goal. First, when you want to open the door, your brain will send signals to your arm one by one. After receiving the signal, the nerve starts to move, causing the muscles to contract and relax, and the muscles will pull the bones on the mobile phone, thus making the action of opening the door. The muscular system of the human body consists of three different kinds of muscles. A nerve cell and the muscle fibers it dominates constitute a motor unit, so muscle jitter is normal.