There have long been two schools of thought regarding bodily pain. Some tell you to put ice on it. Some tell you to use heat. Which is better?
That depends. According to this most recent research, ice will reduce blood flow, which can reduce pain. However, cold can also slow the healing and increase the likelihood of the pain becoming chronic. Heat, such as might be applied by a heating pad, will increase blood flow, which helps relax muscles and ease aching joints.