We can experience all sorts of muscle pains, but how do we know which therapy to use to reduce the pain? Ice or Heat? Here are a few ideas to consider when reaching for your heat compress or your ice pack. Some science: Heat causes vasodilation, or the widening of blood vessels, whereas Ice therapy causes vasoconstriction, or the narrowing of blood vessels. Heat applications transfer heat TO the body, whereas cold applications transfer heat FROM the body. Our bodies use pro