toxification System, Gastrointestinal System, Hormonal/Endocrine System, and Immune System. Your practitioner will review the report in its entirety with you. Additionally, based on the test results, Zyto suggests supplements, herbs, and essential oils to bring your body into balance. How does it work? Zyto biofeedback measures the galvanic skin response, which is the electrical conductivity of the skin. At the completion of a scan, the software’s analysis is documented in the form of a report. With the information gathered, you make decisions to maintain optimum health.