Health, Exercise Training, Heart Health
The heart, together with the arteries and veins, forms the cardiovascular system. The heart is a muscular pump with four chambers, separated by one-way valves. It pushes blood into the lungs to collect oxygen and get rid of carbon dioxide, and then around the rest of the body to deliver oxygen and other nutrients. Like all muscles, the heart needs its own blood supply to work properly. It gets this from the coronary arteries, which are small blood vessels on the surface of the heart. Additionally, the heart has special nerves in it that tell it how fast to beat. The heart works very hard, beating on average 72 times a minute – that’s around 40 million beats a year. Keeping it healthy means not smoking, getting regular exercise and eating a diet low in saturated fats and salt. It also means maintaining a healthy body weight.
, Heart Health