A VO2 max test measures heart health and breaks down your ideal cardio zones for burning fat and building muscle.

I dreaded the test. It wasn’t the max effort I worried about. It was the apparatus.

On TikTok, VO2 max is going viral as the key to improving your endurance during a workout. In short, you can think of this metric as the maximum amount of oxygen your body uses during exercise – V ...

VO2 max testing requires a mask to measure oxygen intake and carbon dioxide output to determine your cardiovascular fitness. When you think about how fit you are, you might think about how far you can ...

Fitness is full of numbers meant to help you become faster and stronger. There’s your mile run time, your resting heart rate and measures of strength and flexibility. But perhaps the gold standard is ...

If you wear a running watch, you might have noticed a function that estimates your VO2 max score. If your running is in a good place, you might have seen this number rise over the past few months or ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Ever wish you could breathe easier and sustain more intensity mid-workout? You may have overheard the ...