For when you need to be in "zone 2" and have no idea what that is.

Most fitness trackers offer a wealth of heart-rate data. Here’s how to make sense of it. By Talya Minsberg If you wear a smartwatch or fitness tracker, you likely already have access to a steady ...

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. When you track a ...

When you track a strength training workout on a fitness watch, that watch will happily tell you what heart rate zones you were in during the workout. In fact, they'll do that for any workout, whether ...

Your heart rate can tell you a lot about your fitness and cardiovascular health. Your heart beats consistently, day in and day out, but you may not generally pay close attention to it. You might take ...

Data: Apple Heart and Movement Study; Chart: Axios Visuals Where Americans exercise more, resting heart rates are lower, new Apple data shows. The inverse is also true. Why it matters: A lower resting ...

I Ran 30 Miles Testing 5 Smartwatches to Find Out Which One You Can Actually Trust ...

Regular aerobic exercise, such as walking, slow jogging, and swimming, is key to preventing heart disease. It’s also important to incorporate strength-building and flexibility exercises. Your body is ...