What is Heart Rate Variability, what it means and how to use it to improve performance and reduce stress.
Applying this concept to your life will require a heart rate monitor and the use of an app. I recommend the Elite HRV app, available free here: https://elitehrv.com/
The heart rate monitor I used and recommend is the Polar H10 (https://amzn.to/2x5EtQW).
This monitors are also compatible with the app, and a little less expensive: Polar H7 (https://amzn.to/2ywUn7n)
