Your Garmin Is Lying… Unless You Know THIS (Sleep Score, VO₂ Max, Readiness Explained)

Summary

The presenter explains how to use Garmin metrics as practical coaching tools—not as numbers that should control your training. The main focus is sleep and recovery, VO₂ max as a longer-term fitness marker, and Training Readiness for daily decisions.

Key Strategies and Tips

Use Sleep Metrics to Assess Recovery

• In Garmin Connect, review your sleep score alongside sleep duration, sleep stages—including deep and REM sleep—restlessness, and stress.
• Garmin’s Sleep Coach adjusts its suggested sleep duration based on factors such as activity, naps, and stress, and learns your patterns over time.
• Breathing variations and overnight skin-temperature trends may offer additional clues about stress, recovery, or sleep conditions.
• If your sleep scores and HRV are trending down, consider managing stress and reducing training intensity. Consistently strong sleep may support a harder training day.
• Don’t overreact to one poor night; focus on the 7-day trend.

Treat VO₂ Max as a Long-Term Fitness Indicator

• VO₂ max estimates how much oxygen your body can use during intense exercise. Garmin derives its estimate from heart-rate and activity data.
• Running and cycling estimates may differ because each activity places different demands on the body.
• Heat and altitude can affect readings, so a seasonal dip does not necessarily mean you have lost fitness.
• To improve VO₂ max, combine steady aerobic training with shorter, intense intervals. Aim for consistent, planned training rather than frequent, random hard workouts.
• A flat or falling trend may reflect fatigue, stress, or inadequate recovery.

Use Training Readiness to Guide the Day’s Workout

Training Readiness combines factors such as sleep, HRV, training load, stress, and recovery time.

• High or “prime”: Consider harder efforts, heavier lifting, or a benchmark workout.
• Moderate: Training is reasonable, but pay attention to how you feel and to possible contributors such as poor sleep or elevated stress.
• Low: Reduce the intensity and consider lighter movement, technique work, or mobility. A low score does not necessarily mean you must skip training.

Check Garmin’s explanation for the score to understand what may be affecting it.

A Simple Three-Part Check-In

1. Check sleep and HRV as a gauge of recovery.
2. Check Training Readiness to help choose the day’s effort.
3. Track VO₂ max over time as a marker of longer-term cardiovascular fitness.

The presenter emphasizes that fatigue is not inherently bad, but recovery matters. Garmin data is most useful when viewed as a set of trends and interpreted alongside your training and life circumstances.

Presenter and Source

• Presenter: Chris (captioned as “Colobby Chris”), owner of Oxnard Movement/CrossFit Ventura
• Source: Oxnard MVMNT