RECOVERY STACK · FOUNDATIONS
THE science.
The concepts behind every protocol. What the data actually measures, why timing matters, and what the research says about adaptation.
What is HRV: and what it actually tells you as a HYROX athlete
Heart rate variability is the most misunderstood number on your wearable. Not because the science is complicated. Because nobody explains what the number is actually measuring, and what you should do differently based on it.
What moves your HRV: the six levers that matter for HYROX athletes
Your variability score does not fluctuate randomly. Six specific inputs drive it in consistent, measurable ways. Understanding which one is doing what changes how you interpret the number every morning.
Garmin vs WHOOP: which recovery tracker should a HYROX athlete use?
Both devices measure your HRV. They use different methods, give you different data, and serve different needs. A framework for HYROX athletes choosing between them, from someone who tracks everything on Garmin.
How to read your HRV score
Garmin, Whoop, Elite HRV. What each device actually shows and how to build a personal baseline that means something.
Recovery timing: what happens in the hours after training determines what you actually adapt to
The session creates the stimulus. The window after it determines whether that stimulus becomes adaptation or wasted stress. Knowing when to use cold, when to eat, and when to push again is not a detail. It is the mechanism.
HRV-guided training: how to use it in practice
The most operational article in the series. How to adjust session intensity day to day based on what the number says.