Toned abs are a nice perk, but core exercises do so much more for you. Whether or not you realize it, a strong core is essential for pretty much all your daily habits. "You need your core to be solid ...

Atrial flutter is a type of irregular heartbeat, or an arrhythmia. It causes your heart to beat too fast. Atrial flutter doesn't always have symptoms, but it can sometimes have serious consequences if ...

When your electrical system is working normally, the two upper chambers of the heart (atria) contract and pump blood into the two lower chambers (ventricles) in a well-coordinated way. This results in ...