What causes leg cramps at night?

Leg cramps at night may be caused by various factors. Below are some of the main reasons: 1. Cold exposure: If the room temperature is low at night, the lower legs may become chilled, causing muscles to tense up and trigger cramps. 2. Calcium deficiency: Calcium ions play an important role in muscle contraction. When blood calcium levels fall below normal, muscles may become overexcited and spasm. 3. Overexertion: Prolonged standing, walking, or intense physical activity during the day can fatigue the calf muscles, leading to nighttime cramps. 4. Poor posture: Maintaining the same position for extended periods while sleeping, or putting pressure on the lower legs, may also cause muscle spasms. If symptoms occur frequently or persist, it is advisable to seek medical evaluation promptly.