I know a few of you are interested in this topic for use in your own training sessions. Here's the best podcast I've seen (errr heard) on the subject of HRV - what it is, how it works, the science, how to use it, etc...
https://thequantifiedbody.net/episode-1 ... rew-flatt/
In fact this blog has a lot of interesting podcasts on exercise and science.
