Understanding Garmin Sleep Stress: What Those Orange Bars Actually Mean

Garmin Sleep Metrics screen showing 51 restless moments, 55 bpm RHR, and a low SpO2 dip of 83%.

Garmin Sleep Stress: What Those Orange Bars Actually Mean As a cycling coach, I’m constantly preaching the “Physiology First” gospel: listen to the engine, not just the dashboard. But lately, I’ve been my own most difficult athlete. I’ve been analyzing my Garmin Sleep Stress while deep in the trenches of “outdoor mania” labor. While the […]

Garmin Guru Deep Dive: Decoding the Internal Response to 4-Minute VO2max Intervals

A consolidated physiological data graph of a 5x4 minute VO2max cycling session, showing overlapping data for VO2 consumption, Moxy SmO2 (muscle oxygenation), heart rate, and power output.

Garmin Guru Deep Dive: Decoding the Internal Response to 4-Minute VO2max Intervals Today’s session of 4-minute VO2max intervals was a masterclass in why I lead with physiology, not physics. As the Garmin Guru at Online Bike Coach, I’m constantly looking for the “truth” behind the numbers. Today, that truth was found in gas exchange and […]

Sleep Score HRV Stress: The Yin and Yang of Recovery

A vertical three-light traffic signal with a black housing, shown against a plain white background. The middle yellow light is brightly illuminated, while the top red and bottom green lights are dark.

The Yin and Yang of Recovery Physiology First Training | By Coach Richard Wharton Managing your Sleep Score HRV Stress data is the ultimate balancing act for any serious athlete. I’ve spent the last 48 hours in the “pain cave” building a trailer, manhandling heavy steel. When I pulled my metrics this morning, I saw […]

Garmin HRV Stress Balance: When Life Gets in the Way

Garmin HRV Status graph showing 4‑week HRV trends with balanced and unbalanced readings, baseline range, and overnight HRV summary.

Garmin HRV Stress Balance: When Life Gets in the Way My training, recovery, and daily decisions start with Garmin HRV Stress Balance. I love the fantasy version of training: ride hard, lift heavy, eat clean, sleep eight hours, repeat. And with all the data my Garmin wearables give me — especially my older Garmin Fenix […]

The Garmin Ecosystem: Why Your Watch is More Important Than Your Power Meter

Updated Garmin Recovery Time of 13 hours showing Train as Usual status after a night of rest.

Garmin Recovery Time: Why Your Watch Beats Your Power Meter By The Garmin Guru | April 24, 2026 Understanding Garmin Recovery Time is essential for any athlete following a “Physiology First” approach. As a coach with over 20 years in the industry, I know that your bike computer is only half the story. To truly […]

Decoding the Flux: How the Reverse Fibonacci Protocol Re-Maps Your Threshold

Stacked line graphs showing physiological data from a Reverse Fibonacci cycling workout, including power output, heart rate, SmO2 desaturation, and VO2 plateaus across 8, 5, 3, 2, and 1-minute intervals.

    Beyond the Score The Garmin Guru Series | Decoding the Fast-Adapter | By OnlineBikeCoach.com Programming Reverse Fibonacci intervals is the ultimate way to shatter the lie of the “Static Zone” in high-performance cycling. We move past the idea that a single FTP test or a heart rate formula from a 1980s textbook is […]

Physiology First: Navigating a “Red Light” Morning with AlphaHRV

Screenshot of a Garmin HRV Stress test showing a high stress score of 75.

    Physiology First: My Red Light Recovery Ride This morning was a masterclass in why I apply a Physiology First framework to every session, looking at the internal engine before I look at the wattage. Between a late meal and the devastating news about my friend Murray being struck by a motorist—suffering a serious […]