Cardio gets a bad reputation because many people picture long, punishing runs or packed gym classes. But cardio just means ...

Are you trying to build your cardiovascular endurance? You may want to give zone training a try. The post Heart rate zones made my workouts smarter—not harder appeared first on The Manual.

Dr. Myerburg answers the question: 'How Do Pacemakers Know To Pace Faster?' — -- Question: How do pacemakers know when I need a faster heart rate, for example when I am exercising or anxious?

You can also test the accuracy of your numbers out on the run, for example by running at what feels like a hard pace (using the ‘talk test’, you should only be able to get two or three words out at a ...