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 ...

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 ...

Zone 2 cardio rate training means working in one of five heart rate zones at 60-70% of your max heart rate. “Zone 2 is where the magic happens—your body is optimized to go longer at a more manageable ...

Low-intensity training is great for you, no matter what your fitness-tracking gadget says.