Heat and cold therapy can be an effective and inexpensive way to relieve pain from a variety of conditions such as arthritis, pulled muscles, inflammation and swelling. Cold therapy is best for bruised or swollen joints and tendons; it improves nerve activity and blood flow. Use ice packs and a bag of ice cubes with a little cool water for acute injuries/pain, inflammation and swelling. Heat therapy improves blood flow, circulation and soothes muscles and joints and increases their flexibility. Use heat packs and pads for muscle pain, tension and stiffness. Take care, your body will thank you!