Both hot and cold compresses can ease pain, but the trick is knowing which one to use when. Any time you have a sudden onset of discomfort (either from a new injury or a flare-up of an existing one), apply a cold pack for 20 minutes, several times a day. Icing the area decreases blood flow to the injured region, which helps prevent swelling and reduce soreness. Ice is nature’s anti-inflammatory, and with all the controversy over pain medication these days, it’s a inexpensive, safe, smart choice. If you live with chronic achy pain from back pain or arthritis, heat is better; it increases blood circulation, soothing muscles and stiff joints. Many of my clients rave about the one-use disposable heat pads and wraps available at the drugstore—you simply stick them on and go.