Minimizing exposure to cold (ex. outdoor weather, air conditioning, reaching into a refrigerator or freezer) and keeping your extremities/body warm is extremely important. Patients should wear mittens or gloves, especially when touching refrigerated or frozen items. In addition, many warming devices are available to protect the hands. Thick socks, hates, ear muffs, and warm clothing made from silk, cotton, wool, or down can help people maintain their body temperature. At home, electric heaters, comforter, and electric blankets can also be used. Keeping the entire body warm helps prevent Raynaud’s Phenomenon attacks. Although avoidance of emotional upset and stress isn’t always possible, various relaxation techniques (self-taught or learned in training courses) have proven effective for some. One example, biofeedback, has been used to increase finger temperature; however, its benefit is still unclear.