Human bodies are designed to move in order to circulate blood and nutrients to every cell. Staying active and on the move is crucial to our health for a lot of reasons. But it's especially important ...

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 ...

The calf muscles play a vital role in blood circulation. They are often called the body's second heart. Strong calf muscles ...

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, ...

Organ transplantation involves the transplantation of organs from donors as a means to treat disease or injury, but there is a shortage of organs available for donation compared to the demand for ...