The cramp in the calf in the middle of the night also hurts the next day, mainly in the cramp process lasts longer, resulting in muscle fiber tissue damage, so the next day will feel the obvious pain symptoms. After this situation: first, to keep the calf position relaxed rest, avoid further activities, you can use a warm water bag appropriate heat compress, effective relaxation of muscle tissue, can play a role in improving blood circulation, help relieve pain symptoms. Second, the calf position can be pressed by itself, the process of pressing can make the tense muscles become relaxed, and can also increase the local blood circulation, playing a very good therapeutic effect. The third, to keep strictly warm, must not appear cold, because after the cold will lead to an increase in local metabolites, accumulation, leading to further aggravation of pain, may also trigger the leg cramps again. Fourth, when the leg cramp occurs, you must pull the muscle cramp in the opposite direction, such as the calf back muscle cramp, should be carried out ankle dorsiflexion, you can stand with the toes on the ground, the ankle joint is in dorsiflexion for a period of time, the cramp will be relieved on its own.