How to Use Heart Rate Variability Feedback

A number of people in the hedge fund world use heart righte variability to determine, much like an athlete would when they are on and when they are off. You can use it almost like biopedback, that you can then learn to correlate your optimal performance state with a certain type of breathing. So for those people listening, maybe you say, breathe in for a count, five inhale for five. Hold for 20, exhale for ten seconds, something like that. And once you've used the heart righte volatility to say, oh, when i do x, my display is such that i i know it corresponds to my optimal decision making state. I so im making better trading