Most people suffer from leg cramps during the night at one time or another and bodybuilders who train hard often experience calf cramps. In rare cases cramps are linked to underlying health conditions, but they are generally harmless. When you find yourself suffering from a leg cramp, try to relieve the pain by flexing your foot upward and massaging the muscle, or if possible walk it off. To help prevent cramps in the first place, always ensure you do a warm-up and cool-down before and after your workout. Also drink plenty of fluids to ensure you are not dehydrated, have a cold shower or bath after your workout, and/or stretch the muscles in your legs for a few minutes each night before going bed.