Summary
Heart rate during exercise - Column
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Putting your heart to the test.
The heart beats constantly. It A pumps blood throughout the body at approximately 72 beats per minute, or more than 100,000 beats in 24 hours' It circulates at least 2,000 gallons of blood a day. This powerful muscular pump never stops working, regardless of the level of activity. After climbing a flight of stairs, the skeletal muscles relax, but the heart keeps on beating. Contrary to what you might expect, the blood passing throug...
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