I generally use ice rather than heat to treat injuries Cryotherapy. However, I like to use heat before Massage (manually or with the Thumper, or occasionally to alternate between ice and heat. My choice of heating device is the Theratherm electric blanket. It is somewhat expensive at $53 for a 14 x 14 inch blanket (Theratherm from Amazon.com) but it works well. The blanket is thermostatically controlled, with a timer. The thermostat works reasonably well, but the blanket can get significantly hotter than the required temperature, especially if you have the blanket under your body. I also use the heated blanket to keep me warm when I’m using ice on another body part.