Foot cramps can be caused by a number of reasons, the first being over-exercise, then wind and cold, and calcium deficiency or unexplained foot cramps. There are several ways to relieve pain after a foot cramp, including keeping warm, applying hot compresses, eating calcium tablets or drinking milk, taking proper rest, and traction, as follows: 1. Keep warm: don’t get cold, get cold. 2. 4. Rest: If the cramp is caused by excessive exercise, you can take rest to relieve the symptoms of foot cramp. 5.