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 ...

AEDs, or public defibrillators, are designed to be used by anyone. Try to stay calm and follow the directions that the device gives you. Share on Pinterest Aria sandi Hasim/Getty Images A ...

Understand how defibrillators work to restart the human heart. One type of drinking water linked to up to 62% higher Parkinson's risk Teens arrested after teacher prank turns deadly in Georgia RFK ...

For the second time in his career, Danish footballer Christian Eriksen collapsed on the pitch. Here is how his implantable ...

Your heart's job is to keep your pulse steady to pump blood throughout your body. Sometimes your heart rate is slower when you're relaxing, and sometimes it's faster when you're exercising or stressed ...