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 ...

We all know there's a heart in the body; we've been reading about it since childhood. As long as it beats, humans live. Let's tell you about the second heart and where it is located. Where is the ...

Rachael has a degree in Zoology from the University of Southampton, and specializes in animal behavior, evolution, palaeontology, and the environment. Rachael has a degree in Zoology from the ...

Hundreds of thousands of Americans suffer a heart attack every year, and heart disease remains the biggest cause of death here in the U.S. And when those heart attacks happen, typically you’ll feel it ...