Idioventricular rhythm happens when the heartbeat originates from the heart's lower chambers at a slower than normal rate. It ...

Your watch already tracks heart rate, but turning on this view helps you adjust your workouts in real time. Here's how to do it.

Credit: Liam TooherIt may sound dramatic, but the rate at which your heart is beating plays a key role in how long you’re ...

Over the course of just one month in space, engineered human heart tissue got weaker, its ‘beating’ patterns became irregular ...