If you don't have a magic pillow...you need 2, and now! They are filled with a special material that hold heat and cold for a long time. Great for headaches, migraines, sore joints, back problems, sprained ankles (a specialty around here), cramps, sore feet...you name it, this might work!
Buy 2, one to keep in the freezer for the sprained ankle and another to put in the mircrowave at hight for 3-4 minutes for sore muscles and such.
More choices to come!