Add Yahoo as a preferred source to see more of our stories on Google. Electrocardiograms, or ECGs, record the electrical activity of your heart. Randy Faris/The Image Bank via Getty Images Your ...

If you recently got a pacemaker due to an arrhythmia (an irregular heartbeat), heart failure, or bradycardia (a heart that beats too slowly), you might have concerns about getting back into exercise.

Medics are now carrying out an advanced pacing technique which doctors say is helping hearts beat more naturally ...

You must have heard of pacemakers? They are required when the heart's natural system malfunctions, causing it to beat too ...