That tension becomes especially clear with heart rate zone training, a popular five-tier system that endurance athletes use ...

If you’ve ever worried about your heart rate during exercise being too high or too low, you’ll want to read this. Your "heart rate zones" might be completely wrong. Not only are zones defined ...

Understanding your ideal heart rate during exercise is crucial for training smarter and supporting long-term health. Your maximum heart rate can be e ...

Your heart rate can tell you a lot about your fitness and cardiovascular health. Your heart beats consistently, day in and day out, but you may not generally pay close attention to it. You might take ...