The science guy explores the anatomy of the human heart and explains how the cardiovascular system functions. Animated graphics and models are used to illustrate how the heart pumps blood through the body's arteries and veins. Demonstrates how heart rate changes in response to exercise and extreme pressure on the body. Features live footage of the heart during surgery, discussing how the heart muscle can be damaged. Emphasizes the importance of aerobic exercise to strengthen the heart and explains how a low-fat diet helps maintain heart health.

Award-winning series explores the world of science and nature using humor, music, experiments, and interviews with scientists. DVD features fully indexed chapters correlated to national science standards, downloadable teacher's guide, interactive glossary and quiz, Internet links, and bonus materials.