Heart Rate Variability (HRV) is a measure of the naturally occurring beat-to-beat changes in heart rate. The analysis of HRV, or heart rhythms, is a powerful, noninvasive measure of neuro-cardiac function that reflects heart–brain interactions and autonomic nervous system dynamics.

The Autonomic nervous system is extensive and is involved in the function of every organ system. Clinical manifestations of autonomic dysfunction are involved virtually in all diseases. The structural pathological process affecting brain whether infectious, degenerative, neoplastic or inherited may result in autonomic syndrome.

As your body adapts to prolonged, chronic stress you will undergo a metabolic shift towards a 'stress physiology'. Think of this as having your fight or flight "switch" taped in the on position!! Numerous studies indicate a link between the chronic stress response and the top 3 killers in our society: Heart disease, cancer, and diabetes.

Heart Rate variability is a reliable indicator of autonomic balance. The HRV score when combined with the surface EMG and thermography tests will give you your NSFI report. Just like in school, a higher score, is like a better grade. Low scores reflect poor levels of vitality and high levels of stress physiology.