Sports rubs aren’t just for athletes—products like Icy Hot, Tiger Balm, and Biofreeze can take some of the ache out of your back, shoulder, or knee or another body part. Plus, you can use them along with a painkilling pill: Since they don’t enter your bloodstream, they won’t cause drug interactions or side effects. Instead, they use ingredients like menthol, lidocaine, and camphor that dull nerves’ transmission of pain to the brain—similar to what happens when you rub your fingers over, say, the spot on your elbow you just bonked. Chronic-pain sufferers may want to check out capsaicin creams, which are made with the same hot substance that’s in chile peppers. These creams help numb nerves, but you have to use them daily— sometimes three to four times a day—and it takes about a week to feel relief.