Both metrics are important – but one of them is better at determining your running performance over long distances ...

In terms of differences, if you think about VO2 max as the size of your engine, lactate threshold is the size of the gears in ...

Unfortunately, VO2 max decreases a lot faster when you stop straining than it increases with training. “Early on, you can see ...

FOR ABOUT A a year, an exercise physiologist I know kept offering to do a VO2 max test on me. For more than a year, I’d been resisting it. Not because it’s not important. Plenty of trends have come ...

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 ...

A PS contributor tried Eternal and a 2.5-hour grueling fitness test that pushes you to the max. Here are her takeaways and photos from the experience.

Single-leg strength is essential for running. Every stride is a one-leg activity. In shorter distances, the ability to ...