I have been working out for two months, and it is already very painful. It is normal to feel sore and swollen because of lactic acid produced by anaerobic exercise. It still hurts after two months of exercise, and that is injury. It is suggested to reduce the amount of exercise and do more aerobic exercise recovery. Fitness exercises are mostly strength anaerobic exercises, so we should pay attention to the number of exercises and aerobic relaxation exercises after exercise.