The heart is made up of four chambers. Blood flows through these chambers and the arteries supply all parts of the body with the oxygenated blood. The veins return blood to the lungs for re-oxygenation. When kept healthy and strong, the veins and arteries work efficiently. The heart is protected by skin, muscle and a sturdy ribcage. The real risk to the health of our heart comes from failing to take proper care of it. Quit smoking if you do. Regular exercise is essential to help maintain weight and keep the heart strong. Limit fats in the diet, particularly animal fats derived from meat and full-fat dairy foods. Keeping the level of cholesterol low will ensure a healthy heart