Muscle soreness for stretching should be based on the physiological structure of different parts of the choice of different stretching methods, the principle is that you need to make the sore muscles fully stretch, consciously have a sense of stretching, and continue for a period of time. Muscle soreness is mostly caused by patients who have not exercised for a long time, but suddenly carry out overload exercise or prolonged exercise, it is due to exercise more than the intensity of aerobic exercise and make lactic acid can not be decomposed in time, caused by accumulation in the muscle parts. Through stretching can reduce muscle tension, conducive to blood circulation, speed up the recovery, generally need to make the sore muscles fully stretch, consciously have a sense of stretching, and keep for a period of time. However, it should be noted that rheumatoid arthritis and other diseases may also cause muscle aches and pains, and patients whose symptoms cannot be relieved need to go to the hospital for diagnosis and treatment.