英语四级六级阅读练习（17）：保持大脑年轻化的七种方法

1. Because studies have shown that among other brain benefits, aerobic exercise increases capillary development in the brain, meaning more blood supply, more nutrients and — a big requirement for brain health — more oxygen.

2. Anything that closely engages your focus and is strongly rewarding will kick our brain into learning mode and necessarily notch it up.

3. Because they have more mental information to draw upon than younger people do.