Explain What happens to the heart and why this happens?

Answer 1

The heart is divided into two sides each side is divided again into two chambers the atrium upper chamber and ventricle lower chamber blood vessels veins carry blood to the heart from the rest of the body this blood carries carbon dioxide and cellular waste products the blood goes into the right atrium and then to the right ventricle where it is then pumped to the lungs to dispose of wastes and receive a fresh oxygen supply from the lungs the blood returns to the heart It returns to the left atrium and then to the left ventricle the blood is then pumped out of the heart by the left ventricle into the aorta the left ventricle is the chamber of the heart that is responsible for pumping blood to all parts of the body the aorta sends this blood to small arteries, which carry the oxygen-rich blood to the rest of the body. information obtained from http://www.besthearthealth.com/about.HTML

Answer 2

The more you exercise and the harder you push yourself, the harder your body has to work. Your heart rate will increase to increase the flow of blood throughout your body. This keeps you functioning. Your lungs will try to take in more and more air, providing you with more oxygen. The more oxygen and blood flow you get, the farther you can go.

However, if you push yourself too far your lungs won't be able to gather enough oxygen and your heart will strain. This will cause you to collapse and fall unconscious. The lack of oxygen is the primary problem in this case, because the brain is not getting enough of it. Your heart, on the other hand, will begin to fail because it doesn't have enough oxygen-rich blood and it will be exhausted.

So, do yourself a favor. When you're tired, please try to rest.