VO2 max
The peak rate at which your body can take in and use oxygen during hard exercise, per kilogram of body weight.
The peak rate at which your body can take in and use oxygen during hard exercise, per kilogram of body weight.
It is the single best summary of cardiorespiratory fitness, and one of the strongest long-term health predictors there is -- more so than most of the bloodwork here.
No range is seeded, because a healthy value falls steadily with age and differs by sex: there is no one band that would fit. A watch estimates it from your heart rate against your pace rather than measuring it, so read the trend on a single device and ignore the offset between two.
Worth mentioning a clear decline that a break in training does not explain.
On a report in another language.
A lab report names this analyte in its own language. Vitals Vault recognises each of these and files them all under VO2 max.
Catalog entry last updated 2026-08-31. Browse all 165 metrics.