News — how stuff works

Using heat therapy for pain relief can be very effective to help soothe lower back pain, migraines, menstrual cramps, stiff muscles and much more.  Figuring out what type of heat therapy to choose and which product will work best for you can be confusing to figure out.  In local stores or online, you will find lots of options including hot water bottles, electric heating pads, rice bags and multiple ointments. Despite the different options, did you know there are two different types of heat therapy, Moist Heat and Dry Heat? What is the difference between Moist Heat and Dry Heat? ...

Ever wondered how sodium acetate heating pads and hand warmers work? Despite being an effective way to warm your hands or soothe your body aches, they are a live action science experiment and fun to use! Once activated they heat up in seconds and can last up to 2.5 hours depending upon the size and amount of liquid inside. The fun part of the sodium acetate heat packs lies in how quickly the transformation of the liquid takes place once the disc is flexed; in a matter of a few seconds you watch the clouding like crystallization take place and...