What the heart is made of: Heart muscle tissue, also called cardiac muscle tissue. What makes the heart beat: Electrical signals. Average resting heart rate: 60 to 100 beats per minute (in adults) ...

The heart -- the hardest working muscle in the human body -- even works when you're at rest. Located almost in the center of the chest, the adult human heart is about the size of a fist.

Muscle increases your resting metabolic rate, burning a higher amount of calories—and belly fat—around the clock. And a healthy weight leads to a healthy heart.

For men at least, entering middle age with plenty of muscle may lower the later risk of developing heart disease by more than 80 percent. Skip to content Skip to site index Move ...

I believe that cardiac tests such as the stress echocardiography, in which an ultrasound is done after exercise, or the stress thallium, in which a nuclear medicine is injected into the bloodstream ...

The findings could determine how HFpEF is treated in women compared to men. With HFpEF, the heart muscle contracts normally but the heart is unable to fully relax and refill properly between beats.

In an act of transformation worthy of any magician, scientists have converted scar tissue in the hearts of living mice into beating heart cells. If the same trick works in humans (and we’re ...