To live is to have a heartbeat, which is why it makes sense for us living things to have a good understanding of our ticker. It’s well-known science that our hearts beat faster when we exercise and ...

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?

Thanks to the proliferation of smartwatches and fitness trackers, it’s never been easier to log your heart rate while running: Simply don the device, start your workout, and watch those beats per ...