Training
VO2 max (Cooper test)
VO2 max is your aerobic ceiling; the single best fitness marker and a strong predictor of health. The Cooper test estimates it from one run: 12 minutes, as far as you can.
Why VO2 max matters
A higher aerobic ceiling is not just performance; in population studies VO2 max is one of the strongest predictors of longevity, stronger than many classic risk factors. The good news: endurance training raises it at any age.
In the app: Tabata Timer by fit.how has these calculators built in, plus an interval timer you can read from across the gym. See the app.