Foot cramps may be to grow taller, or it may be caused by lack of calcium, catching a cold, strenuous exercise, etc. 1. Growing taller: when the patient is in puberty, growing taller due to the increased need for calcium, there may be foot cramps, drowsiness, increased appetite and other symptoms, at this time the patient needs to supplement nutrition in time, moderate exercise, it is possible to grow taller. 2. Calcium deficiency: due to calcium deficiency, the concentration of calcium ions in the patient’s blood will decrease, and the muscles will be over-excited and produce spasms, which will lead to the phenomenon of foot cramps. Patients need to take reasonable calcium supplements under the guidance of doctors. 3. Cold: Due to cold, the blood circulation in the legs is not good, and muscle spasms will occur, resulting in foot cramps. Patients should pay attention to keep their legs warm. 4. Strenuous exercise: When patients exercise strenuously, the leg muscles are in a state of tension for a long time, which leads to the phenomenon of leg cramps. Patients can relax the leg muscles through massage. When patients often appear leg cramps, it is recommended to go to the hospital in time and reasonable treatment.