<span>I'm not just going to tell you my beliefs so you can submit it as your homework.
</span>Its supposed to be your opinion, What are your beliefs?
Are you active do you eat healthy?
Are you religious? Do you have spiritual beliefs?
Are you Social?
Which one is more important to you? How do they relate to your life?
<span>If you don't do any of those things what can you do to improve? </span>
These are the questions you should ask yourself when answering this question.
I hope this helps :)
Answer:
When we exercise the blood capillaries dilate because of the removal of waste products like carbon dioxide from muscles during exercise.
The dilated blood vessels results in the increased blood flow and increased blood flow leads to the delivering of more amount of oxygen to the body muscles and cells during the exercise.
So increased blood flow is necessary for the removal of waste products like carbon dioxide and lactic acid generated during exercise and to deliver the appropriate amount of oxygen to muscles to function properly.