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 disease is the number one cause of death among women and men in the United States. Each year more than 300,000 women, or 1 in every 5, die from it. Yet, studies show that less than half of U.S.
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