Every day, in all kinds of weather, many thousands of men and women jog. Why has jogging-running
slowly for long distances become so popular? Most joggers begin because they hear it is a very good exercise.
Jogging makes the heart stronger and helps people lose weight. It can also help them feel better about
themselves.
     Donald Robbins, who is forty-two years old and works in an office, began jogging a few years ago
because he felt he was too fat. At first he could only run about 100 yards. It took him three months to be
able to run a mile. But two years later, he ran in a marathon race over twenty-six miles. Many joggers, like
Donald Robbins, feel that if they can succeed at jogging, they can succeed at other things also, and quite often
this feeling helps them at their jobs.
     Should you jog too? If you do, be sure to ask your doctor for advice. Jogging may be too much exercise
for you.
     Does jogging cost much? No, it costs almost nothing. But it is very important to have a good pair of shoes
that are made especially for jogging. They protect your feet and legs from the shock of running on hard
surface.
     How fast should you go? Jog with a friend and talk to each other as you run. If you have difficulty in
talking, you're going too fast.
     How far should you jog? Remember not to go too far too soon. In fact, you should walk, not run, the first
few times. Then do some short jogs, but no more than what you can do comfortably. After that, increase your
distance a quarter or half mile every two weeks or so. Maybe in a few years, you can run in a marathon too, as
thousands of people do.

1. The article is mainly about _____.

A. jogging as a sport
B. jogging as an exercise
C. jogging in a safe way
D. jogging as a way to marathon

2. Which of the following statements is true?

A. Jogging should be done in the early morning.
B. Many people think that jogging is a set of one's willpower (意志力)
C. Jogging is time-consuming.
D. You should not talk while jogging.

3. Which piece of advice is not mentioned in the article?

A. Have a good pair of shoes.
B. Have a sports suit.
C. Remember not to go too far too soon at the beginning.
D. Ask your doctor for advice.

4. Why is jogging so popular according to the passage?

A. It doesn't cost much.
B. One can start jogging at any time and in any place.
C. It is a very good exercise.
D. One can talk with one's friend while jogging.

5. The author doesn't think that everybody is fit for jogging. Which paragraph deals with it?

A. Para. 1.
B. Para. 2.
C. Para. 3.
D. Para. 4.