Infrared Sauna Therapy also promotes the killing and removal of many pathogenic (disease causing) bacteria, viruses, and parasites. Raising body temperature through the use of the infrared sauna can powerfully assist the body to kill bacteria, fungi, parasites and viruses. This is the essence of fever therapy (hyperthermia) for infections. Many people have a low body temperature and, for this reason, cannot get rid of chronic infections. Common sites of infections are the sinuses, ears, eyes, bladder, throat and intestines.