1. Fill the foot of a tube sock with rice. Do not use instant rice.

2. Tie the end of the tube sock into a knot.

3. Place the rice-filled sock in your microwave oven for 2 to 3 minutes on high power. Time may vary by microwave, so check after one and a half minutes.

4. Remove the sock from the microwave and place on the area of your body where needed.

Tip: The sock may be very hot. Protect your skin from burning by using a towel or other material between your skin and the sock.