英语翻译

题目

英语翻译
Which works harder,your heart or your brain?
That kind of depends on whether you‟re busy thinking or busy exercising.Your heart works up to three times harder during exercise,and shifts enough blood over a lifetime to fill a supertanker.
But ,in the long run,your brain probably tips it,because even when you „re sitting still your brain is using twice as much energy as your heart,and it takes four to five times as much blood to feed it .
出自一道阅读理解题，答案根据这句话得出“Which works harder,your heart or your brain?
brain works harder than heart,为什么呢

答案

但是,从长远来看,你的大脑可能提示
brain works harder than heart.可以从全文中看出.