Why do calf muscles become stiff during sleep at night?
Disease description:
Recently, I’ve noticed that my calf muscles become stiff as soon as I fall asleep—without pain or itching—which feels quite unusual. I’d like to ask: What causes calf muscle stiffness during sleep?
Doctor's answer (1)
Dr. Lin Yunfei
Stiffness in the calf muscles during sleep is associated with leg muscle cramps. Most leg muscle cramps result from prolonged standing or sitting, excessive physical activity, or calcium deficiency. It is essential to first identify the underlying cause before implementing appropriate interventions—such as avoiding prolonged standing, engaging in regular moderate movement, consuming calcium-rich foods, or taking calcium supplements directly. Additionally, soaking your feet before bedtime can enhance blood circulation in the legs and help alleviate muscle cramps.
