The heart is the body's hardest-working muscle. Whether you're awake or asleep, or exercising or resting, your heart is always at work. It pumps blood through arteries to deliver oxygen to organs and ...

Heart health is about more than just the heart itself. It’s a two-way street between the heart and the rest of the body. However, many U.S. adults aren’t aware of the connection between organs.

What Is the Heart Conduction System? The heart conduction system is made up of cells, nodes, and signals that help your heart to beat. In fact, the cardiac conduction system is responsible for our ...

Your circulatory system works all day, every day, to pump oxygen throughout your body. There are cardiovascular conditions that can impact this system. Your circulatory system, also known as your ...

Exercise may do far more than strengthen the heart and muscles. New research suggests regular aerobic activity can physically reshape the nervous system that controls the heartbeat, altering key nerve ...

We all know that the heart, along with the brain, is the most important organ for the body that is responsible for pumping blood. However, there exists a "second heart" as well, which functions inside ...

Dehydration may lead to heart palpitations. Without enough fluids, the heart works harder to pump blood, causing an increased heart rate and irregular heartbeats. Heart palpitations from dehydration ...