Therapeutic heating, also known as thermotherapy, has grown to become very popular in the last few years. The explanation to this is simple: a lot of people deal with muscle pain and it seems that this type of pain responds really well to heat. Muscle pain is generally caused by muscle cramps and spasms, over-exertion and trigger points, also known as muscle knots. The big problem with muscle pain is that a lot of people often confuse it with other types of health problems and they don’t know that a simple thing such as a heating pad can solve their…