1. Pierce J. Howard, another expert, says new research indicates that physical exercise increases the amount of certain brain chemicals that stimulate growth of nerve cells.
    另一名专家皮尔斯·J. 霍华德说，新的研究表明，体育锻炼提高了大脑中某些激发神经细胞生长的脑化学物质的含量。

2. Measurements made by Arthur Kramer at the University of Illinois demonstrated that inactive adults, aged 63 to 82, could hit buttons faster in response to a tone after they went through a 10-week water exercise course.
    伊利诺伊大学阿瑟·克雷默测量的结果证明，63至82岁的不运动的成年人，在完成为期十周的水上运动课程之后，听音击键的反应加快了。

3. Just as exercise strengthens the heart and lungs, bones and muscles, it may also power up the brain.
    正如运动能强心、健肺、固骨、壮肌，运动也能健脑。

4. Consequently, the brains of people who exercise may be better equipped to tackle mental challenges.
    因此，那些进行锻炼的人的大脑可能更有能力应付各种智力挑战。

5. One of the best answers he's ever received came from an 86-year-old man who learned the ancient Chinese exercise form of tai chi as part of Wolf's study of how exercise can help seniors prevent falls.
    他得到的最佳答案之一来自一位86岁的老人。沃尔夫研究的是运动如何帮助老年人防止摔跤，而作为该研究的一部分，这位老人修习一种古老的中国健身法——太极。

6. I walk to work every day because it is good exercise.
    我每天步行上班，因为那是很好的运动。

7. I want to describe a sociological exercise that might seem to validate it -- except that,
    我只是想描述一项社会学考察活动, 这项活动似乎证实了上述论点。

8. In the third and final stage, people often feel weak, tired, and out of breath — and exercise performance is severely compromised.
    在第三也即最后阶段，人常常感到虚弱，疲乏无力，喘不过气，运动成绩大打折扣。

9. Whose analysis of the data on exercise and fall prevention appeared last year in The Journal of the American Medical Association.
    他对锻炼与摔跤预防的数据分析去年发表在《美国医药协会学刊》上。

10. In general, "the evidence is increasing that the more older people can do in terms of exercise, the better off they are — with two pieces of advice," says Province.
    一般而言，"老年人做的运动越多，他们的身体就越好，这方面的证据越来越多。但有两点建议，"普罗文斯说。