Your watch’s VO2 max isn’t perfect, but you can improve its accuracy with better data and heart-rate tracking.

This easy test can help you get a gauge on your VO2 max—without a watch.

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"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." FOR ABOUT A a year, an exercise physiologist I know kept offering to do a VO2 max test on me. For more ...

Danish medical device spinout VentriJect aims to revolutionise fitness assessment by providing a fast and accessible method for measuring cardiorespiratory fitness (CRF), particularly VO2 max.

Professional triathlete Kristian Blummenfelt registered a mind-bending score.

After running for over a decade, I wanted to see how healthy my heart is. I got an active metabolic assessment at Life Time, measuring my VO2 max and heart rate. I also learned which running speeds ...