edwardblabla Posted January 30, 2007 Posted January 30, 2007 why does the volume of blood increase when exercising and why does an athelete need more blood to his/her muscles
ecoli Posted January 30, 2007 Posted January 30, 2007 because excersize requires energy. Energy production requires things like glucose and oxygen, and for wastes to be carried away. All this is accomplished by the blood.
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