[header] How to prevent leg cramps while pregnant [title] Stretch regularly. [step] Leg cramps are a sudden tightening of the muscles, which can cause intense pain. Stretching has been shown to be one of the most reliable ways of preventing or relieving leg cramping. 
Focus on stretches for your calves and feet, and make sure to stretch before bed, as well as before and after exercise. Avoid any stretches that require you to lay on your back.