Does cardio make it harder to reach a personal weight lifting record? Does lifting weights compromise your mile time? We ...

Diet is the most effective way to create a calorie deficit for fat loss, but cardio is essential for maintaining results and ...

Don’t hang up those running shoes just yet.

There are tons of open debates in the fitness world: Are crunches or planks better for your core? Should you stretch before or after your workout? Low weight, high reps—or vice versa? And then, of ...

If you frequently walk to work or to run errands, pick up the pace — even a short power walk can help get your heart rate up. Similarly, you could take the stairs when possible at home or at work, ...

Welcome to Start TODAY. Sign up for our free Start TODAY newsletter to receive daily inspiration sent to your inbox. It’s common to focus on your favorite form of exercise, but a well-rounded fitness ...

The most neglected muscle at the gym might be the most crucial: the heart. It might be because it’s so difficult to flex this muscle in the mirror, or because cardio machines are perceived as boring, ...

Many data-driven runners have a grasp on common heart rate metrics, like resting heart rate, maximum heart rate and heart rate zones. But there’s another, often undervalued data point worth keeping ...

At the end of a rough day, the rhythmic swooshing of the elliptical, whir of a bike, or patter of feet on the belt of a treadmill might sound like music to your ears—for stress relief, cardio is tops.

Just about everyone wants to be fit, but not everyone is willing to put in all the work it takes to get there. Part of that reticence isn't so much laziness as it is a lack of understanding about what ...

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. So where should you ...