Add Yahoo as a preferred source to see more of our stories on Google. You know the feeling. When you first see your crush and your head starts spinning, your palms ...

We may soon be able to diagnose cardiac problems at home using ordinary smartphones to record the sounds of our heart beating. An app that lets people record their heart sounds has been found to make ...

A fast heartbeat can be caused by emotions like stress or anxiety. Dehydration, or drinking caffeine or other stimulants, can make your heart beat fast. More serious conditions like heart arrhythmia ...