The reasons why it is difficult to sleep with sore calves at night are as follows: 1. It is not excluded that the blood supply or reflux disorder of the lower extremities, or the relationship with varicose veins in the lower extremities, causes soreness and pain in the calf area, making it difficult to sleep. 2. It may be due to less walking or less exercise in daily life, which suddenly increases at once. 3. Work, no physical exercise, sudden high-intensity physical exercise, or due to heavy physical labor during the day, resulting in increased anaerobic enzymes, increased lactic acid, gathered in the calf muscles caused by the soreness of the calf, making it difficult to sleep. In this case, the first thing you should do is to rest, reduce strenuous activities, avoid straining, and elevate the affected limb appropriately. When sleeping at night, try to put a pillow under the leg to avoid the calf from sagging for a long time, which will help promote blood circulation and help reduce the symptoms of soreness and swelling. In addition, you can appropriately cooperate with some hot compresses or physical therapy measures to assist the rapid reduction of the symptoms of acidity and swelling.