The heart is a unique organ, and our life depends on its functioning. Each day the heart beats, on average, 100,000 times, and pumps about 7,200 liters (1,900 gallons) of blood. But, unfortunately, a lot of people experience cardiovascular diseases today. This is the name for a group of disorders of the heart and blood vessels. These disorders negatively affect the whole body, and they are considered the main cause of death worldwide. The key to the health of the cardiovascular system involves...