Click here for High protein diets for athletes email Leg cramp causes. Cramps in the arms Cranp trunk. We often sleep with our feet and toes extending crramp from the rest of our bodies, a position called plantar flexion. Make sure you are eating healthy foods especially if you are pregnant that are rich in calcium, potassium, and magnesium. These people feel as if they are having cramps but no muscle contraction occurs. All rights reserved.