Hello, the cause of cramp is fatigue sleep, insufficient rest or excessive rest, which leads to the accumulation of local acid metabolites, which will all cause muscle spasm. If the walking or exercise time is too long, the lower limbs are too tired or lack of rest and sleep, lactic acid will accumulate, sleep time is too long, blood circulation will slow down, and carbon dioxide will accumulate.

Analyze the causes of your pain and give you some advice.

It's winter now. Keep your legs warm.

The second is fatigue, because you stand for a long time, and you exercise to a certain extent, which will cause convulsions.

3. Calcium deficiency and calcium supplement are good for health. It is recommended to make up for life less.

Another suggestion is to drink sports drinks during exercise, because sweating during exercise will make the body lack salt and local blood circulation will lead to cramps.

Also, ask the coach for stretching. Stretching should be done before and after exercise. Any coach will understand, otherwise lactic acid accumulation will make your muscles ache and tired the next day.