What causes leg cramps at night?

Leg cramps at night may be caused by several factors: 1. Calcium deficiency: Calcium plays a key role in nerve conduction in the body. When blood calcium levels drop, muscles and nerves become abnormally excitable, making leg cramps more likely. 2. Overexertion: Prolonged standing, excessive exercise, or failure to perform proper stretching before bedtime can leave leg muscles in a tense state, potentially leading to nocturnal cramps. 3. Cold exposure: Cold temperatures affecting the legs during the night can trigger muscle contractions and subsequently cause cramps. 4. Poor circulation: Excessively heavy bedding or pressure from objects on the legs during sleep may impair local blood flow, causing muscle tension and cramping. To prevent nighttime leg cramps, it is recommended to ensure adequate calcium intake, avoid overexertion and cold exposure, and maintain good circulation. If cramps occur frequently, consult a doctor for professional diagnosis and treatment advice.