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A member asked:
How come a fast heart rate is good for you?
A doctor has provided 1 answer
Who said that it is?: There is nothing intrinsically beneficial about a rapid heart rate. The heart increases the amount of blood it pumps through 2 mechanisms: stroke volume (blood pumped with each beat) and heart rate. It speeds up to meet the demands of the moment. An inappropriately fast heart rate can be a sign of illness and prolonged very rapid rates are harmful.
Answered 4/15/2013
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