"Learning is brain change," says Professor James Zull from Case Western University in Cleveland, Ohio, USA.
美国俄亥俄州克利夫兰凯斯西大学的詹姆斯·祖尔教授说:“学习就是改变大脑。”
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You can end up wasting a lot of energy by pushing yourself on by sheer willpower... when, in fact, it may be the case that your brain and body really need a break.