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Answer:
The role of increased blood flow
During moderate- to high-intensity exercise, your muscles and tissues demand more nutrients and oxygen, which means that your heart must work harder and pump faster to meet those needs, says preventive cardiologist Haitham Ahmed, MD.
C. H<span>ow hard a person works to do an activity.
Intensity has to do with effort. If a person works hard than they are intense, if vise versa than they are not intense.</span>
Oncology, this is .......can I help you................
