I = Ice
Ice applied promptly to an injury can slow down or minimize some of the inflammation. The cold causes a closing to the arterioles in the tissue, which reduces the bleeding. The local tissue metabolism slows down reducing its need for oxygen and nutrients, and the nerve impulses are slowed considerably to reduce the pain that is felt providing a numbing effect.
Examples of ice treatment include using an ice bag or ice bucket for 15-20 minutes or ice massage for 7-10. Heat should only be applied after you are sure that the bleeding and swelling has stopped completely; otherwise, an individual's recovery time will be delayed.