The heart pumps more: A heart is a muscle. With exercise it can ger stronger and work better. So just like lifting weights can make your arm strong and make it easire to lift, so can exercise strengthen your hear and require it ti beat slower to pump the same amout or more blood.
Answered 8/9/2013
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
3 doctors weighed in across 2 answers
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