VO2 max is a marker of fitness, historically used by athletes. Now, many wearable fitness users have access to estimates of ...

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A new performance marker is changing how men train, recover, and measure true fitness.

Being strong doesn’t necessarily mean you’re fit anymore. You can put up big numbers in the gym, look the part, and still ...

Scientists have found that cardiorespiratory fitness, specifically, your VO2 max, which measures how efficiently your body ...

First, it helps to understand the difference between the two common ways physiologists report VO2 max. Relative VO2 max takes that number and divides it by your total bodyweight, commonly expressed in ...

Researchers question how relative VO2 max is calculated and share why your watch’s number may not tell the full story about ...

When you think about how fit you are, you might think about how far you can run or how many push-ups you can do. Or maybe you think about health metrics like your resting heart rate or heart rate ...

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Similar to zone 2 training and cold plunges, VO2 max has become an increasingly discussed topic of conversation in the wellness world. VO2 max refers to the maximum rate of oxygen your body can use ...

Running to the best of your ability can feel like a numbers game. To hit new PBs, you’re probably under the impression that you should keep tabs on all kinds of ...

Fitbit’s AI coach is going global, turning your cardio fitness data into clear, personalized insights you can actually understand and act on.