3. Massage the cramped muscle. If your cramped muscle is in an area you can touch with your hands, such as your legs, try to massage it. Grasp your leg muscle tightly with both hands, and rub deeply and firmly to help it relax.1  Having a second person who can help massage areas you may not be able to reach will help.f you feel something sharp or stabbing, relax your stretch. 1  For a calf cramp, set your feet apart, the affected leg in front of the other. 2  Another calf stretch is seated with both legs extended together in front of your body. 3  Stretch your thighs one at a time.