On HRV

vita mutatur, non tollitur (life is changed, not taken away)

It is also shameful due to neglect to grow old before seeing oneself in the most beautiful and strongest bodily state one might attain.—Xenophon, Memorabilia

Resting heart rate, thats so 2005. HRV is the new measure of readiness. The interest in heart rate variability (HRV) is growing, particularly as technology develops and one’s ability to quickly esta…