The five heart rate zones explained In the five-zone model, each zone corresponds to a percentage of your maximum heart rate and reflects a specific exercise intensity. Zone 1 (50–60% MHR) is low to ...

Heart rate zones are a way to describe how hard you're working during a cardio workout, like running or cycling. The faster your heart beats, the harder you're working. So an easy jog might have you ...

Few would disagree that cardio, also called aerobic exercise, is good for your health. Of the 10 most common chronic diseases, seven are "favorably influenced by regular physical activity," according ...

For years, runners have used heart rate-based training to maximize their running potential. This method includes five “zones” at which your heart is beating at a percentage of its maximum capacity. In ...

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. One million years ago ...

To get a sense of what average running heart rates look like for the pros, we peeked at some of their public Strava posts.