Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. Whoop, the screenless ...

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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 ...

When it comes to understanding your fitness and overall health, VO2 max is often heralded as the most important metric. 🏃🏻‍♀️For everything you need to know about this trendy and telling metric, ...