1 chronicles

Numbers, Decoded

Clear, physiology-first explanations of HRV, resting heart rate, sleep stages, VO2 max, and ECG alerts—what the numbers mean and when they don’t matter.

HRV Is a Trend, Not a Score: What That Number Actually Tells You

Numbers, Decoded

Aug 14, 2026

HRV Is a Trend, Not a Score: What That Number Actually Tells You

Your watch gives HRV a daily grade. That’s the wrong way to read it. Here’s what the number actually measures, why singl...

Graham Ellison →