35. What can we infer from the passage?
(A) Life in Flagstaff, Arizona is easy and relaxing.
(B) Air pollution in cities is a serious matter.
(C) Scientists have discovered ways to purify the exhaust.
(D) People in Los Angeles eat a lot of natural foods.
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These days, health specialists are promoting the idea of fitness for everybody. Fitness means
good health or physical condition, especially as the result of exercise and proper nutrition. One
individual may need fewer calories than another, depending on metabolism. Some people might
prefer easier exercise to more strenuous exercise. Understanding the needs of your own body is the
key. Even though no one can be sure of avoiding chronic diseases, poor diet can definitely ruin
good health. With the change of your eating habits, you can reduce the damage or lower the risk of
disease.
Poor eating habits, such as eating too much junk food, might result in having extra kilograms.
Although gaining a few extra kilograms doesn’t always mean you are overweight, it can be hazardous
to your health. Unlike the muscle-bound athletes, for most people, the kilograms they are packing
are fat, instead of muscle. Extra kilograms can decrease your life expectancy while increasing the
risk of health problems, such as high blood pressure, heart enlargement, high blood cholesterol
levels, heart attacks, adult-onset diabetes, colon and prostate cancers in men; and breast and uterine
cancers in women, and osteoarthritis.
For a typical adult who would like to know whether they have excessive body weight, the
body mass index (BMI) is the best indicator. The BMI is a common measure expressing the ratio of
weight to height. It is a statistical measurement comparing an individual’s weight and height.
Because measuring and calculating one’s BMI is an easy task for most people, it is currently the
most widely used diagnostic tool to identify weight problems within a population, including
underweight, overweight and obesity. With this simple formula — an individual’s body weight
divided by the square of his height — he can calculate if he should drop a few kilograms or not. For
example, a person weighing 55 kilograms, with a height of 1.65 meters, would have a healthy BMI
of 20.2 [55/(1.65)2 =20.2]. For adults, a BMI ranging from 18.5 to 24.9 is considered normal. If
your BMI is between 25 and 29.9, you are overweight, while anyone with a BMI of 30 or more is
considered obese.
Good health is not something you are able to buy at any drugstore. You cannot depend on
getting it back just with a quick visit to the doctor when you are sick, either. Instead, you should do
exercise on a regular basis and keep a balanced diet if you want to have good physical condition.
You are the one who is responsible to make your body last without major problems. Mistreating
your system by keeping bad eating habits, neglecting symptoms of illnesses, and ignoring common
health rules can indeed counteract the best medical care.
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