New ask Hacker News story: Ask HN: Best way to track personal energy levels, and Heart Rate Variability?

Ask HN: Best way to track personal energy levels, and Heart Rate Variability?
5 by ekpyrotic | 5 comments on Hacker News.
Hi all, I have read that heart rate variability (HRV) is a good indicator of well-being, health, and energy levels. With the arrival of the New Year, I want to get my energy, health, and well-being in check. A couple of questions for others, if anyone has any experience of monitoring and tracking this data? 1) Is HRV a good proxy for general well-being, or are there other metrics that should be considered / integrated? 2) How have you tracked and monitored HRV, and any other metrics that you think are important to energy / well-being?