Heart rate is one of the most valuable physiological metrics for runners because it provides objective real-time insight into how hard your body is working. Unlike pace or distance, which are external ...

Tracking your heart rate with a heart rate monitor (HRM) during your runs is one of the most powerful ways to optimize your training, whether you're a dedicated marathoner, power triathlete, or just ...

We may receive a commission on purchases made from links. Smartwatches and other wrist-bound fitness trackers have exploded in popularity over the past few years, but there's a wearable heart rate ...