What is the VO2 Max measurement on my fitness tracker?

VO2 Max represents the maximum amount of oxygen your body can consume during high-intensity exercise and serves as a key indicator of aerobic capacity. To obtain a measurement, you must perform an outdoor run or trail run for at least 10 minutes while maintaining a heart rate of at least 75 percent of your maximum. Your results will be categorized into seven levels ranging from Novice to Superior.