Leg cramps are sudden, involuntary muscle spasms, often occurring in the calf, foot, or thigh, and are commonly known as “charley horses.” While painful, they are generally harmless. Nighttime (nocturnal) leg cramps can be caused by several factors, including:1. Dehydration: Inadequate fluid intake can lead to muscle cramps.2. Electrolyte Imbalances: Low levels of minerals such as potassium, calcium, or magnesium can contribute to cramps.3. Staying in one position for extended periods can strain