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 ...

Our hearts beat around 100,000 times a day—and do so throughout our entire lives. They draw the energy for this from the ...

When most people think of heart health, they imagine cardio exercises, nutritious meals and regular doctor visits. Yet, few would suspect a link between their heart and calf muscles. Surprising as it ...

Study shows greater muscle area in men leads increased risk of heart disease; it's different for muscle density. Body composition -- often expressed as the amount of fat in relation to muscle -- is ...