Did you spend much time lying on the comfortable sofa at home during the summer vacation? How often did you do sports this summer? People across the world need to get moving, according to a new study by the World Health Organization (世界卫生组织).

    5% of adults do not get enough exercise, according to the study. This number hasn't changed from 2001. Because of this, about 1.4 billion people are close to deadly diseases (疾病) such as heart disease and cancer (癌症).

    People should do at least 2 and a half hours of "moderate intensity (中等强度)" exercise each week, such as dancing or swimming. They can also do 75 minutes of "vigorous intensity (高强度)" exercise, such as running or playing soccer, according to the WHO.

    As for how to exercise more, experts says that we don't have to go to the gym (健身房) every time For example, we can go up and down stairs (楼梯) a lot instead of taking the lift. If we can't go to a dancing class each week, standing on one leg for 30 seconds a day is very good too.

    The study also found that women are less active than men, 32% of women hardly ever take exercise, compared to (比较) 23% of men. Women spend more time at home taking care of children and doing housework.

    But unlike that in most other countries, men are less active than women in China, with 16.6% of men and 12% of women not getting enough exercise.

It is easy for many people to catch a cold in the springtime or fall. It makes us wonder if scientists can send a man to the moon, why can't they find a cure for the common cold? The answer is easy. There are actually different cold viruses out there. You never know which one you will get, so there isn't a cure for each one.

When a virus attacks your body, your body works hard to get rid of it Blood rushes to your nose and causes a block in it. You feel terrible because you can't breathe well, but your body is actually eating the virus. Your temperature goes up and you get a fever, but the heat of your body is killing the virus. You also have a runny nose to stop the virus from getting into your cells. You may feel very uncomfortable, but actually your wonderful body is doing everything it can to kill the cold.

Different people do different things to deal with colds. In the United States and some other countries, for example, people might have chicken soup to help them get over the cold. Some people take hot baths. Other people take medicine to stop different symptoms(症状)of colds.

There is one interesting thing to note一some scientists say taking medicine when you have a cold is actually bad for you. The virus stays in you longer because your body doesn't have a way to fight it and kill it Bodies can do an amazing job on their own. There is a joke, however, on taking medicine when you have a cold. It goes like this:

It takes about one week to get over a cold if you don't take medicine, but it takes only seven days to get over a cold if you take medicine.

    Every day in all kinds of weather, many thousands of men and women like jogging. Why has jogging slowly for long distance become so 1? Because jogging makes the heart stronger and helps people 2 weight. It can also help them feel 3 about themselves.

    Donald Robbins is a forty-two office worker, weighing about over 150 kg. He began jogging a few years ago because he felt he was too 4. At first he could only 5 about 100 yards. Two years later, he ran in a marathon race over twenty-six miles. Many joggers, like Donald Robbins, feel that if they can succeed in jogging, they can also succeed in 6 things.

    Should you jog too? If you do, be sure to ask your doctor for 7 Jogging may be too much exercise for you. Does jogging cost much? No, it actually costs almost 8 But it is very important to have a good pair of shoes that were made especially for jogging.

    How fast should you go? Jog with a friend and talk to each other as you run. If you have difficulty in 9 you are going too fast.

    How far should you go? Remember not to go too far or too soon. In fact, you should walk and do not run for the first few times. Then do some short jogs, but no more than "hat you can do 10. After that, increase your distance a quarter or half mile every two weeks or so.

    Obesity (肥胖症) is becoming a problem in our busy society, almost one in three American adults is now considered to be obese. Children obesity is also at an all-time high.

    Obesity means being very overweight. If you are obese, you have too much body-fat. If you eat more food than your body can use, this will make you put on weight. Food that your body does not need will be stored (储存) as fat by your body.

    The following are the major factors (因素) that increase the risk of obesity.

    What you eat plays a major role in weight gain. Eating a lot of fattening food such as hamburgers, sweet drinks, ice creams and other sweet food can increase the risk of becoming obese.

    If you do not do enough exercise, you will put on weight as the food you eat is not being used to make energy for physical activities.

    The chances of your being obese are greater if your parents are obese.

    There are many psychological (心理的) factors that cause people to eat too much. People who are worried, unhappy or bored will often eat to make themselves feel better. This is known as comfort eating.

    Age is another factor, as you tend (趋于) to be less active when you get older. When you get older, you need to eat less, and if you do not eat less, you will put on weight.

    Obesity can cause many health problems such as heart problems, high blood pressure and many other serious medical conditions.

    Many of us don't pay much attention to the importance of eye care. It is said that if you take care of your body, then you can surely be healthy. That is why our eyes should be given a lot of care. Natural eye care should be put in a number one place.

    There are several causes leading to poor eyesight like not enough food, genes (基因) and aging (老化). Televisions, computers and reading are also the causes of having poor eyesight. If you work in front of the computer, it is best to take a break every once in a while. Something dirty can cause redness and they will make you feel uncomfortable. It is bad for your eyes too. If this happens, the best way is to clean your eyes by using cold water. You must also try your best to protect your eyes from harmful things. For example, sunglasses are not just for fashion but they can also serve as a great way to protect your eyesight from ultraviolet rays.

    Eating healthy foods will do good to your eyesight. Remember that vitamins A, C and E are good for eyes. Try to eat food groups that have these vitamins. And you should do eye exercises because exercises protect your eyesight too. If a person exercises regularly (定期地) and eats the right kind of food, his eyes will stay in good condition for a long time.

    All above are natural ways of eye care that help us keep healthy eyes. Being happy all the time can be helpful to a person's eyesight too. In a word, eye care is very important, no matter how old a person is.

You know an apple is healthier than candy. But how do you make changes and eat really healthy food all the time? Start here with these wonderful rules.

You can finish all of the work in less than ten minutes.

Rule 1: Eat two pounds of vegetables. Remember to eat many vegetables every day. One pound is cooked and one pound is raw. They really help you to fight against some discases(疾病) and protect your health.

Rule 2: Put an egg on your meal. The egg is a kind of wonderful food. As long as you have eggs in your fridge, you can make a healthy meal with a fried egg, or add an egg to a bowl of rice.

Rule 3: Eat a little junk food. Junk food is delicious but it is not good for our health. But it's so cheap that you may like eating too often Eating it a little can be possible.

Rule 4: Eat some desserts(甜点) every day, but not too much. Not all desserts can make you fat. Some of them are delicious and healthy. A chocolate is a kind of dessert. And it's good for you to eat a little chocolate. Be smart enough to choose some desserts and try to improve your health.