A simple towel around a cold pack protects your skin ... noting that some people misinterpret heat as "hot" and end up hurting themselves. Heat therapy is delivered through heating pads, heat ...

Show the class the room-temperature heat pack. Click the metal disc. The solution will crystallize and the pack will become hot. Pass the pack around the room to allow the students to see the ...

The heat should only be a gentle warmth, just below body temperature. A hot water bottle would do the trick, or just a towel made damp with hot water. The theory is that this can increase blood ...