Do you enjoy good health? Miss Chen, a famous doctor, gives some rules for keep healthy.

Eat different kinds of foods, especially fruit and vegetables. If you eat different foods, you more likely to get what your body needs.

Drink water and milk often. Your body about 70% water, so you need lots of water keep healthy. You should drink six to eight glasses of water every day. Don't drink lots of sweet drinks because sugar is bad for your teeth. Milk important for your health too.

Get enough sleep. Your body needs to r every day. Adults(成人) need seven to nine hours of sleep every night, and students aged between14 and 17 need eight to ten hours of sleep. And students aged between 6 and 13 need nine to eleven hours of sleep.

Do some exercise every day. You can go for a walk, go swimming or play football. You need exercise because it can make you fit and strong. And it makes you happy too!

Limit(限制) screen time. You may spent a lot of time watching TV, playing video games using the computer. The more time you spend on these activities, the less time you will have for doing outdoor activities. Try to spend no more than two hours a day on you screen.

Everyone wants to have healthy teeth. When you laugh, you will1 your mouth and show your teeth. The healthier your teeth are, the2you will feel. Why is that?

It's because your teeth are important in many ways. Take care of them, and they'll help to3you. Strong and healthy teeth help you grow. They also help you speak4. You can take care of your teeth by doing like these:5your teeth twice a day, after getting up and before bedtime. And make sure you brush all of your teeth, not just the front ones. 6some time on the sides and the back of your teeth. Take your time while brushing. Spend 7three minutes each time you brush.

Be sure your toothbrush is soft. Ask your parents to help you get a new toothbrush every three months. Clean between your teeth with dental floss (牙线). It feels strange when you do it at first, but soon you'll get used to doing it. Brushing8your teeth healthy. You also need to9about what you eat and drink. Eat lots of fruit and10and drink water instead of drinks.

Do you think you are fat? Do you want to be healthy? Let's do exercise together. We have three groups for you to join.

We all know health is the most important in our life and we know smoking is bad for people's health. But not many people know about the danger of second-hand smoke (二手烟). 

Second-hand smoke is the smoke that comes from the smoker's breath. If people get second-hand smoke from time to time, they could get ill from it. It can make people get lung cancer (肺癌) and many other illnesses more easily. 

But how bad is the problem of the second-hand smoke? The World Health Organization（WHO）did a study of 194 countries. They found that about 600, 000 people die every year because of second-hand smoke. It makes a lot of problems. 

Second-hand smoke is especially (尤其) bad for children because their bodies are growing. The study also shows that around 165, 000 children under 5 die each year because of second-hand smoke. Most of these children are from Africa and Southern Asia where health care is very poor. 

You can do something to keep yourself and other people away from second-hand smoke. You can ask the smokers, such as your parents, to smoke outside. And if someone smokes close to you, you'd better hold your breath or just walk away.

①Today, people want to keep healthy through sports. But some of their ideas are not right. 

②"Meat is a good meal before games because it has much energy (能量)." But in fact, meat is not a good meal before games, because the best food before games should have carbohydrates ( 碳水化合物). So you can have some food like potatoes, bread, bananas and so on.

③"The best time to do sports is early in the morning." Morning is a good time to do sports, but it may not be good for you. You can exercise in the afternoon or evening, too.

④"You can't drink water when you do sports because it makes you feel tired." When you do sports, you must have some water during breaks (休息). And after exercising, you must have much water. If you don't drink enough (足够的) water, then you may feel tired.

⑤Doing sports every day is very important. And remember you need to give your body a day to have a break. Too much exercise is bad for your health. Don't exercise when you are very tired.

Do you always eat hamburgers and never have milk, fruit or vegetables? Well, you need to stop (停止) these habits if you want to be(health). 

For breakfast, you need to eat egg and have some milk at least ( 至 少 ). They can help you think (good) in class in the morning. And you'd better (最好) have breakfast before you have the (one) class. Also, you can eat apples, bananas, oranges and other fruits in the morning. It's said that it's better to eat fruit in the morning than in the afternoon. So Some parents want their children (eat) more fruit.

For lunch, it is not enough to eat only vegetables and rice, the time in the afternoon is very long. Food with chicken is good. You (real) need some meat if you have P.E. in the afternoon. 

For dinner, it's OK to eat little. Some people like to eat only some (vegetable) salad because they don't want to be fat. And it's difficult for (they) to sleep well if they eat too much. When is the good time to sleep? students, it's 9:00 p. m.

On November 1st, Chinese biologist Yan Ning made a great decision to return to China. The 45-year-old woman said that she would leave Princeton University in the US to help set up a new medical academy (研究院) in Shenzhen, Guangdong. 

Yan used to be one of the youngest professors at Tsinghua University. She has won many prizes for her studies on protein (蛋白质) at home and abroad. 

Yan is going to help set up the Shenzhen Medical Academy of Research and Translation (SMART). It has several functions, including scientific research, student cultivation ( 培 养 ) and money-raising support. It is set to be finished in 2025 and Yan with other researchers plans to make it to be a world-famous medical research academy by the middle of this century. 

Yan said she wanted to support more outstanding people and deal with health problems humans are facing. For her, Shenzhen is an energetic place where anything is possible. "Shenzhen is the city of dreams, and I want to realize my next dream here, " Yan said in a speech.

Yan's return can be seen as a symbol of China paying great attention to developing the careers of talented people. Our country gives good chances, which have made many overseas students and talents return.

From 1978 to the end of 2022, 4.32 million Chinese students finished their studies abroad. And about 84% returned to China for further development. At the same time, China encourages foreign

experts to work in China. 

We do eye exercises. We wear sunglasses. We do lots of things to protect our eyes. 

  Ears help us hear the world. But many things, such as loud noises, can cause hearing loss(丧失) .  So how can we protect our ears?

Keep your ears dry and warm. 

Dry your ears with a towel(毛巾)after swimming or taking a bath. If you feel water in your ears, shake(摇晃)your head a little bit. 

How to clean your ears?

 The earwax (耳屎)builds up, dries out and then comes out of the ears along with some dirt(污物) . Don't clean your ears with anything sharp, or it can make the earwax go too deep into your ears and hurt them. 

How to use headphones?

Don't listen to loud music on your headphones for a long time. Follow the 60:60 rule:listen to music at 60 percent of your headphone's maximum volume(最大音量)for no more than 60 minutes a day.    They do a better job in stopping outside noise, so you can listen at a lower volume. 

It is healthy to live around trees. Trees work as doctors and they keep us healthy. 

Many scientists have studied how trees clean the air. For people in large cities, trees can be very important for their health. These days, cities are planting trees not just in parks. They are also planting trees along streets in order to help clean the air. 

Some scientists also believe trees help more than just the air. Trees keep our bodies healthy as well. People in hospitals seem to do better when they can see trees from their rooms. People with trees near their homes usually take more exercise. 

Scientists have also studied the healthy effects (效果) of trees on our minds. One effect of trees seems to be that they make people feel relaxed. Scientists did some research on city people in an area with few trees. After trees were planted on the street, people walked slower when going home. They said the area was much nicer. 

Of course, another good effect is that doctor trees work for free!

You may know that exercise can help you lose weight. However, it has a lot of other good effects(影响) too. Even if you are healthy, there are several reasons that you should exercise.

First, exercise can give you energy(精力). When you are tired during the day, take a walk or go for a run. Scientists looked over 70 different studies about exercise and tiredness. Over 90 percent of the studies showed the same result: Exercise increased(增加)energy and reduced tiredness.

Second, exercise can help you sleep better. Not having enough sleep is one of the main causes of stress(精神压力). Exercising raises your body temperature(温度). Then it goes back to normal(正常) about five to six hours later. You become sleepy at this point because the drop in temperature tells your body that it's time to sleep.

Also, exercise can reduce stress and worry. Doing sports for 20 minutes can make you feel relaxed. How? When you exercise, you have to focus on(专注于) your body, so you can't think about your stressful thoughts.

Exercise can improve your life in so many ways. It can make you feel better, look better, and do more. So why are you sitting there reading? Go out and exercise!