Your heart pumps blood from your head to your toes, provides cells with fresh oxygen, and removes waste products. Located in ...

Every day, your heart pumps about 10 pints of blood 60,000 miles around your body through your circulatory system. That system is made up of blood vessels, the tubes that carry blood throughout your ...

Red blood cells carry oxygen from the lungs to every other organ, and blood-forming stem cells must make about 200 billion new red blood cells each day to keep the oxygen flowing. For many years, ...

The calf muscles play a vital role in blood circulation. They are often called the body's second heart. Strong calf muscles improve venous return and prevent blood pooling. Sedentary lifestyles weaken ...

When biomedical researchers need to test their latest ideas, they often turn to engineered human tissue that mimics the ...

Cold showers cause your blood pressure to temporarily rise. Learn how they affect the heart, as well as their potential risks and benefits.