"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 ...

I'm what I call an "on-paper" athlete. I've been running for a decade, I regularly take weightlifting classes, and I finished a marathon. In my mind, I should be ripped, shredded — all the paper ...

VO₂ Max is the gold standard for cardiovascular fitness. It reflects how the heart, lungs, and cells work together, and provides a clear benchmark for improving healthspan and performance.” — Dr.

Add Yahoo as a preferred source to see more of our stories on Google. VO2 max testing requires a mask to measure oxygen intake and carbon dioxide output to determine your cardiovascular fitness.

Ever wish you could breathe easier and sustain more intensity mid-workout? You may have overheard the term "VO2 max" at the ...