Guides & Insights

Expert guides on VO₂ max testing, training zones, and metabolic testing.

How to Interpret Your VO₂ Max Results

Learn how to understand and use your VO₂ max test results, training zones, and thresholds to improve your training.

Discover 5 proven training methods to increase your VO₂ max and improve your aerobic fitness, backed by science.

We're working on more guides including zone calculators, intake band estimators, and sample test reports.