why does our heartbeat increses after running . is ti true that blood flow increses to breakdown the lactic acid completely
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heartbeat increases because at that point of time we get less supply of oxygen to breathe and we need more supply of blood to regain our strength or energy.
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Our heartbeat increase after running because our muscle needs more oxygen and nutrients and to remove corbondioxide. The lactic acid rises.
christen:
i think that oxygen cannot break lactic acid
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