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 ...

I first tried the Norwegian 4x4 workout a year ago, and since then, it has become a staple of my fitness routine. I don't do it every week (some folks do), but it's a workout I keep returning to ...

Depending on your fitness level, you can use this to get started or give yourself an easy day. This workout gets the heart pumping and works the entire core system (from hips to shoulders), which is ...

If you are looking for something to do after a full-body lift/PT day, typically the only thing you have left is cardio and core. Often, our training programs are split routines with upper body on ...

"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 ...