Sleep on your side. Don't tuck your sheets and blankets too tightly - they can bend your toes down. When a cramp does occur, your best bet for relief is stretching and massage. At the same time, massage the calf muscles gently. Walking may help, particularly, if you put your full weight on your heels.
Ice packs can reduce blood flow and thus relax muscles.
A helpful exercise is to stand two or three feet from a wall, facing it. Lean your weight on your forearms against the wall for 15 to 20 seconds, keeping your heels on the floor. The exercise will help bend your toes up, a good anti-cramp remedy. You are invited to join our mailing list and receive monthly issues of our chapter's newsletter via E-mail.