

Knowing your current VO2 max is key to understanding and improving your fitness.

A VO2 max score is a little like horsepower in a car-it’s a measure of the capacity your body (engine) has to use oxygen when exercising. VO2 max is the maximum volume (V) of oxygen (O2) your body can process. (Note that your first step, as it is with any training program, is, of course, to consult your physician.) This article will offer basics on measuring it, as well as training tips on how to improve it. Whether you’re a runner, a hard-training athlete or someone simply in pursuit of better fitness, VO2 max is a stat to understand and embrace.

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