Rob Kall: Handwarming from the Inside out; Thermal / Temperature Biofeedback Have you warmed your hands lately? How about your feet? Thousands of people do it every day and they don't do it by putting their hands or feet under warm running water or by holding warm clothes, straight out of the dryer. They do it from the inside out. Why would they do it? To help symptoms of stress, anxiety, headache, high blood pressure, Raynauds, diabetes, arthritis and more.

John G. Arena, Ph.D.: The use of EMG biofeedback for the treatment of chronic tension headache. Headache is the most common pain complaint(11) and the most frequent medical problem seen in medical clinics(7). Most experts(3) believe that the majority of headaches are muscle tension-type. Although nearly all of the headache literature treats biofeedback and relaxation therapy as separate interventions, most clinicians combine both procedures when treating their tension headache patients.