我需要多少運動量？

江蘇 成金葉

研究表明，久坐會提高患病的概率，因此專家建議人們每天都要做一些運動，最好每天有不少于30分鐘的適度運動。

主題語境：人與社會 篇幅：264詞 建議用時：5分鐘?

1When it comes to exercise, less is not more—but it's certainly better than none.Physical inactivity accounts for as many as 23 percent of all deaths from major chronic(慢性的) diseases, yet there are so many people who spend a lot of time sitting down.Some people say that they have no free time for physical activity at all.

2Light activity can improve physical and mental well-being. While light activity is good,moderate (適度的) activity is even better, and health experts encourage everyone to have at least 30 minutes a day of moderate physical activity. But you don't have to head to a gym. As recent studies have confirmed, “l(fā)ifestyle” activities, such as walking, house cleaning and gardening, are as effective as a structured exercise program in improving heart function, lowering blood pressure and keeping or losing weight.

3In one study, overweight middle-aged men and women who learned behavioral skills to make them more physically active, such as walking around airports or train stations while waiting for a departure, reduced their body fat percentage and improved their heart function as much as individuals participating in structured programs at a fitness center. In another study, fat women ranging in age from 21 to 60 who adopted a more active lifestyle lost as much weight as women in a low-impact aerobics (有氧運動) program,and regained fewer pounds in the following year.

4There are different levels and types of activity, like aerobics and muscle exercise,which are really helpful. Besides, short periods of exercise during the day are nearly as beneficial as one long session.

Reading Check

1. What can be learned about light activity?

A. It sometimes makes people feel tired.

B. It is especially good for the middle-aged people.

C. It can promote people's physical and mental health.

D. It should be done by everyone at least 30 minutes a day.

2. Which of the following is a “l(fā)ifestyle” activity according to the text?

A. Gardening. B. Doing yoga.

C. Running. D. Playing football.

3. What does paragraph 3 mainly talk about?

A. Influences of being overweight. B. Results of two studies.

C. Structured programs. D. Active lifestyles.

Language Study

Useful expressions

when it comes to 當談及……

physical inactivity 缺乏運動

account for （數(shù)量上、比例上）占

light activity 輕度運動

moderate activity 適度運動

as effective as 與……一樣有效

heart function 心功能

blood pressure 血壓

fitness center 健身中心

adopt a more active lifestyle 采取一種更積極的生活方式

low-impact aerobics 低強度的有氧運動

Cultural Background

有氧運動

有氧運動是指人體在氧氣充分供應(yīng)的情況下進行的體育鍛煉。 常見的有氧運動包括游泳、慢跑、騎自行車、跳繩、爬樓梯、爬山等。 有氧運動要求全身肌群參與，運動持續(xù)時間較長并且是有韻律的。有氧運動能鍛煉心、肺功能，使心血管系統(tǒng)能更有效、快速地把氧氣傳輸?shù)缴眢w的各個部位。