A form of therapy involving the application of ice to treat many kinds of injuries, including those associated with back or neck pain. Ice causes the veins in the affected tissue area to constrict. This reduces the flow of blood while acting as kind of anesthetic to numb the pain. But when the ice is removed, the veins compensate by opening large, allowing a large volume of blood to rush to the affected area. The blood brings with it important chemicals that aid in the healing process.
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