Zone 3 (75-85% of max heart rate): At this moderate to high intensity, your body burns a mix of fat, carbohydrates and protein for fuel. Talking requires effort, as your breathing is heavier.

In the lower heart rate zones—typically defined as zones 1 and 2, and sometimes even up into zone 3—you’re helping your body recover from harder efforts, strengthening type I muscle fibers ...

If your aim for exercise is fat loss, you'll probably be wanting to know if there's an optimum heart rate zone for burning fat. And, well, it's a confusing one. Because technically there is a ...

Understanding our body’s target heart rate zones and how they change as we age is crucial for getting the most out of our workouts. If your goal is to burn fat, for example, you’ll want to ...

Heart rate zones are not a perfect measure of exercise intensity, but can be a useful tool. And if you don’t want to worry about heart rate zones at all, that’s also fine.

Heart rate zone training is when you adjust your effort according to different zones when you’re doing cardio, adds level 2 certified RRCA running coach Erica Coviello, CPT.