Don't have a heat pack for your sore muscles? Fill a sock with (uncooked) rice, tie the end in a knot and put it in the microwave for 1 - 3 minutes. :
How to Make a Rice Sock: 15 Steps (with Pictures) - wikiHow
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Pin by MyArk on Heating/Cooling Bags, Rice Socks | Sock crafts, Labor day crafts, Crafts for seniors
DIY heating pads aka "rice socks" ;; Fill a knee high sock with rice, not the minute rice or quick cook rice, to a l… | Diy heating pad, Heated neck wrap, Diy socks