You create more ATP as you exercise, and which type of fuel your body uses is determined by which heart-rate zone ... pyramid is your aerobic energy system and is where zone 2 sits.

Enthusiasts claim that these long, slow workouts could be the key to longevity and better health. Here’s what the science ...

Zone 2 (65-75% of max heart rate): Here, you're still in fat-burning territory but at a slightly higher intensity. You can hold a conversation, but you might need to take a breather occasionally. "In ...

Fitness trackers and smartwatches can make it easier to stay in your heart rate training zones. (Getty Creative) ...

Metatec, a cutting-edge human performance testing facility located in Mason, Michigan, is revolutionizing the way athletes, ...

remember that efforts below threshold include what we typically understand as zone three in the classic one-to-five zone model. It would seem that tempo and sweet spot efforts are back on the table as ...