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 ...

I was channel-surfing early one morning when images of sculpted bodies working out together caught my attention. It wasn't the first time I had seen this Insanity infomercial, but it was the first ...

While VO2 max estimates were once exclusively reserved for lab settings and high-end sports watches, Oura has developed a way to give users insight into their cardiorespiratory fitness. Dubbed ‘Cardio ...

Most of the interesting stuff in your body happens in your core, not on your wrist. Photo illustration: Graham Bower/Cult of Mac Apple’s VO 2 max metric measures the performance of your heart and ...

Looking to get a cardio burn without spending an hour on the jogging path or plodding on the treadmill? You don't have to spend a ton of time on your conditioning exercises to get into peak shape—but ...

Many group training programs have different levels of fitness ability, as well as athletic history, among its participants. Here is a way to create a program where individuals in the group can alter a ...

I was channel-surfing early one morning when images of sculpted bodies working out together caught my attention. It wasn’t the first time I had seen this Insanity infomercial, but it was the first ...