The autonomic nervous system controls nearly all bodily processes through two subsystems - the sympathetic and parasympathetic. The sympathetic system activates the body for environmental challenges while the parasympathetic favors relaxation. Heart rate variability, the minor differences between heartbeats, reflects the autonomic system's state in a simple way. Analysis of heart rate variability is a reliable way to measure autonomic regulation and assess health, fitness, stress, and wellbeing as it is influenced by lifestyle factors like smoking, alcohol, exercise and disorders. The Universal Body Wave Mobile Phone allows improving heart rate variability through increasing awareness of autonomic regulation, changing lifestyle habits, motivating exercise, and applying non-invasive wave stimulation.