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本篇阅读材料保持大脑年轻化的七种方法选自《读者文摘》(原文标题：7 Anti-Aging Tips to Keep Your Brain Young)。如果大家觉得比较简单，就当作泛读材料了解了解，认识几个新单词或新表达方式也不错。如果大家觉得这些材料理解上有难度，不妨当做挑战自己的拔高训练，希望大家都有进步^^ 1. Move It Quickwhats the No. 1 thing you can do for your brains health? Differential calculus, you say? Chess? Chaos theory? Nope, the best brain sharpener may besneakers? Yup. Once theyre on your feet, you can pump up your heart rate. The best advice I can give to keep your brain healthy and young is aerobic exercise, says Donald Stuss, PhD, a neuropsychologist and director of the Rotman Research Institute at Baycrest Centre for Geriatric Care in Toronto. differential calculus [数]微积分;微分学 chaos theory 混沌理论 pump up 给打气;加速 aerobic exercise 有氧运动 Mark McDaniel, PhD, professor of psychology at Washington University in St. Louis, agrees, but adds, I would suggest a combined program of aerobics and weight training. Studies show the best outcomes for those engaged in both types of exercise. As we age, our brain cells, called neurons, lose the tree-branch-like connections between them. These connections, or synapses, are essential to thought. Quite literally, over time, our brains lose their heft. Perhaps the most striking brain research today is the strong evidence we now have that exercise may forestall some kinds of mental decline, notes McDaniel. It may even restore memory. Myriad animal studies have shown that, among other brain benefits, aerobic exercise increases capillary development in the brain, meaning more blood supply, more nutrients anda big requirement for brain healthmore oxygen. | 
