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 stay in ...

In TODAY.com's Expert Tip of the Day, a trainer reveals the equipment-free hack to know you're exercising intensely enough.

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 ...

Walk into any gym and you’ll see them everywhere – those magical “fat burning zone” charts plastered on every cardio machine, promising to melt away your love handles if you just keep your heart rate ...

An exercise that takes a more mild approach while offering all the fat-burning benefits of a more grueling workout might sound too good to be true. But some claim that the trending “Zone 2” training, ...