If you're a fitness fiend or working to improve your health, you're probably always looking for ways to run faster and farther, train harder and push your limits. You might even already track a number ...

Your VO2 max — a good indicator of cardiopulmonary fitness — isn’t static. It can be improved with consistent exercise or ...

But Zone 0 won’t get you there. To build VO2 max, you need to raise your heart rate with purposeful effort, whether through ...

Are you tracking enough of your fitness metrics yet? No? Great! Here's another one: VO2 max. It's a measurement that's traditionally been used by elite athletes, especially runners and cyclists, but ...

I like working out, but I don’t like the gym. Even before the pandemic made the idea of being stuck in a closed room with sweaty strangers particularly egregious, being stuck in a closed room with ...

Linda Kelly is 80 years old. She's as fit as someone decades younger and has an elite-level VO₂ max. Her easy daily habits ...