The Physiology of Consistency: Why Stable Sleep and HRV Predict Health and Performance, with Dr Greg Grosicki & Prof Paul Laursen

The Physiology of Consistency: Why Stable Sleep and HRV Predict Health and Performance, with Dr Greg Grosicki & Prof Paul Laursen

March 13, 2026

Listen to the episode now or find us on Spotify and Apple Podcasts.

Show Notes

  1. What HRV actually measures. Why heart rate variability reflects the moment to moment changes between beats, and why it gives insight into how the autonomic nervous system is responding to training and life stress.
  2. Why context matters more than the number. How exercise intensity, sleep, alcohol, sickness, hydration, and psychological stress can all move HRV, and why comparing your score to someone else is rarely useful.
  3. What HRV CV adds to the picture. Why the coefficient of variation (CV) may be even more powerful than HRV alone, and how recovery stability over time can reveal who is adapting well and who is not.
  4. What elite data teaches us about recovery. Why the best athletes often show remarkable sleep duration and sleep consistency, and how those habits likely support the stable recovery patterns seen in top performers.

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