Sore legs after exercise is usually due to a large number of activities after lactic acid buildup in the muscle, as well as muscle strain injuries caused by the need for causative factors to do targeted treatment, first of all, we should drink more warm water, can promote the body metabolism to speed up the lactic acid can be relatively quickly absorbed, the pain will be able to reduce. You can also use a hot water bag for local muscle heat, can promote the metabolism of lactic acid, at the same time can help muscle recovery. You can also consume more vitamin-rich foods, such as dragon fruit, apples, kiwi, etc., which can promote the repair of muscle fibers. If time and financial ability allow, you can do physical therapy for legs, which also helps recovery and can reduce pain. And it is important to reduce activities for a short period of time so that the body can return to normal, and the amount of exercise should be increased gradually when exercising again in the future.