For millions of people dealing with osteoarthritis, the quickest and most convenient solution isn’t to call their doctor or take medication, but rather apply heat or cold packs to the afflicted joint. These methods have been used by doctors, patients, athletes, coaches, and trainers for decades, but a simple question remains: Is one better than the other? If you’re hoping to relieve pain, reduce swelling, and improve mobility, should you go with heat or cold?