1. As you exercise the blood vessels in your muscles dilate and the blood flow is greater. This increased blood flow delivers more oxygenated blood to the working muscle. 

2. Exercise improves the body’s utilisation of oxygen and lowers systolic blood pressure. 

3. Exercise changes the shape of the heart causing increase in the weight and volume of the heart. Consequently heart contraction capacity increases. 

4. Heart beat per minute is lowered. 

5. Volume of blood increases mainly due to increase in the volume of Plasma. Number of red cells in the blood increases. Blood volume of a player measures more than 7 litres. 

6. Cardiac output potency of the heart increases. 

7. There is an increase in the flow of blood. 

8. With the expansion of blood volume, flow of blood in the muscles increases, and there is a more growth of vessels and the redistribution of blood improves.

9. As we exercise, the hormone Adrenalin causes our blood vessels to expand so that a greater than normal volume of blood can pass through them. 

10.As a result of exercise there is an increase in stroke volume. More blood is pushed to the ventricle chamber, which soon increase stroke volume.