Joining Dr. Don today is Dr. David Fletcher, a threepeat guest who is here to dive further into the polyvagal theory and heart rate variability. Dr. Fletcher is a chiropractic pioneer and the tools you can use to help track your patient’s inputs and outputs.
The pandemic changed many things, but importantly, it significantly affected the population and their primary autonomic responses. Dr. Fletcher talks us through how his tools track autonomic responses, distinguish between parasympathetic and sympathetic reactions, and interpret data points.



