What is zone 2 cardio, and how do I actually do it?

Zone 2 training is cardio done at a steady, low intensity. It has benefits for aerobic training (so you can run faster), anaerobic training (helping you to recover faster between reps and sets, or ...
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If you have a high VO2 max score, you could live longer. I took a class to boost mine — and finally found a way to make cardio fun.

VO2 max is a buzzy measure of heart health and fitness. I tried a class that promised to boost my VO2 max through cardio and breathwork. I don't typically do cardio, and I realized taking classes ...
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If you have a high VO2 max score, you could live longer. I took a class to boost mine — and finally found a way to make cardio fun.

I have a strange question, but stay with me: Have you ever thought about how long you can run without breathing through your mouth? In a dark basement in central London I recently discovered that, for ...