Commercial heat packs (containing iron and water, or supersaturated sodium acetate) and cold packs (various ammonium salts) can be used to show exo- and endothermicity. Heat packs that contain iron ...

Heat packs and cold packs can offer relief ... noting that some people misinterpret heat as "hot" and end up hurting themselves. Heat therapy is delivered through heating pads, heat lamps and ...

Hot and cold therapy treatments for rheumatoid arthritis can soothe aching, stiff joints. Learn how to relieve pain and ...