Whatever you like to call it – a charley horse  a muscle spasm or an all-encompassing  painful-like-no-other kind of cramp—calf cramps hurt  and it’s no laughing matter Whether you’re dealt with them for years (you’re a marathon runner and that just comes with the territory) or you’re pregnant  and getting them for the first time in your life (a common pregnancy symptom)  we’ve got three tips from the pros that will prevent calf cramps from showing up at all