Young brains may be especially able to boost brain power through exercise, suggested another of Greenough's experiments that showed the most significant changes in the brain occurred among rats that had been exercised when very young.

格里诺的另一组实验显示，年轻的大脑尤其能够通过运动来增强能力。这组实验表明，从小就锻炼的老鼠，其大脑的变化最为显著。