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 ...

Runners, cyclists and gym-goers with wearable fitness trackers are no doubt familiar with the five "heart rate" zones. Ranging from low to very high intensity, these zones are calculated as ...

When it comes to zone 2 vs HIIT training, it feels like there’s a new study published every other week about which method trumps the other for fitness. So, we consulted the experts for their final ...

Zones are based on your heart rate, but each app has its own idea of where they start and end.