Sun April 18, 2010 By: Somya Pandey

Why does our heart beat faster when we excercise.

Expert Reply
Sun April 18, 2010

The rate of breathing increases during vigorous exercise. This is because the body needs more energy which can be released only if greater amounts of oxygen reach the cells. But more oxygen can reach the cells only if more blood reaches the cells. Hence heart has to pump more blood due to which it begins to beat faster.


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