This 6-hour intermediate online course introduces licensed health professionals to the measurement of heart rate variability (HRV) from an EKG signal or from peripheral blood flow (HR/BVP). The course includes specialized software display screens to support a variety of convergent training strategies to produce increased heart rate variability. The course introduces the concepts of heart rate variability (HRV) using the Thought Technology Infiniti instrumentation and the BFE HRV Training Suite.