You glance at your heart rate monitor during a tough run and an unusually high number jumps out at you. Should you be excited or concerned?

After last year’s revamp, Fitbit has been slowly updating more and more of the mobile app, with Heart Rate stats being the latest redesign. There’s no change to the card in the Today tab, but the page ...

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 ...

Heart rate variability typically decreases during stressful situations, although the heart rate increases. Managing stress levels can mean a more variable heart rate. Exercise and relaxation ...

Low intensity heart exercising can help improve your endurance, though it may take longer to achieve your fitness goals than traditional high heart rate training. You may have read or heard that to ...