"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Like other HIIT-style workouts, the method contains spurts of high-intensity exercise and active recovery ...

Just eight intense minutes per session, twice a week, can dramatically improve your cardiovascular fitness and VO₂ max—if you ...

All products featured on Self are independently selected by Self editors. However, when you buy something through our retail links, Condé Nast may earn an affiliate commission. Every so often, a new ...

What if a short 30-minute workout could not only make you fitter but also add years to your life? Since a high VO2 max has been linked to a longer lifespan, workouts that are particularly effective at ...

Running is good. It’s quick, free and helps boost your fitness. If you want to use running to get in shape fast, one of the best ways to go about it is to use intervals. Say hello to the Norwegian 4x4 ...

This article may contain links from our affiliate and advertising partners. We may receive payments when you click on links, buy through them or share this content. After dazzling on screen in her ...

If there’s one thing we know for sure, it’s that there is no shortage of killer cardio workouts. Between AMRAP workouts, rucking, and the viral 12-3-30 treadmill routine, people are constantly finding ...