There are many ways to help improve your health like eating healthy food, taking exercise and getting medical help. But the easiest and cheapest way to improve your health is just to sleep eight hours or more every night. The general sleeping rule is that the younger you are, the longer sleep you need. But regardless of( 不管)age, some people need to sleep more while for some a few hours is enough.

The problem with sleep is that more and more people in the world are not sleeping enough. According to the World Health Organization over half the people in the world may be sleep-deprived. Having less sleep not only makes people feel tired but also causes accidents. In the United States alone, sleepy drivers cause at least 100,000 traffic accidents a year. Also sleep problems can cause medical problems such as high blood pressure(血压).

Why are so many people sleep-deprived? Part of the reasons may be cultural. In the American culture, people put a higher value on work than on sleep. In fact, peopele who sleep a lot are usually seen as “lazy”. Also, you can sometimes hear some people say proudly that they don’t have much time to sleep, they only sleep four or five hours a night. It seems that the less you sleep, the more work you’ll do.

How do we teach these people to learn the value of sleep? Perhaps they may listen to the advice of Dr. James Maas. an expert(专家) in sleep. He says , “Sleep is like a credit (信用卡) card. When you sleep less, you are only borrowing time. You always have to pay it back.”

For those who value work more than sleep, they should listen to what a famous person once said. “Don’t think you will be doing less work because you sleep during the night. That is a foolish(愚蠢的) idea which is held by people who have no imagination. You will be able to do more.”

As school kids, we have many dreams. These dreams can be very big, such as winning the Nobel Prize（诺贝尔奖）. 【小题1】 You may just want to become one of the ten best students in your class.

Once you have found a dream, what do you do with it？Have you ever tried to make it come true？Follow Your Heart by Australian writer Andrew Matthews tells us that realizing（实现）our dreams is life’s biggest challenge（挑战）.

You may think you’re not very good at some school subjects, or that it is impossible for you to become a writer. 【小题2】 In fact, everyone can realize their dream. The first thing you must do is to remember what your dream is. 【小题3】 Keep telling yourself what you want, and you will realize your dream faster. Do this step by step. A dream cannot be realized in one day. A big dream is, in fact, made up of many small dreams.

You must also never give up your dream. There will be difficulties on the road to realizing it. But the biggest difficulty comes from yourself. 【小题4】 Studying instead（代替）of watching TV will lead to better exam results, while saving five yuan instead of buying an ice cream means you can buy a new book.

【小题5】 But it is OK as long as you have the chance to learn more skills and find new interests.

Eyesight plays a very important role in our daily life. Every waking moment, the eyes are working to see the world around us. Over forty percent of Americans worry about losing eyesight, but it's easy to include steps into our daily Iife to ensure healthy eyes. Here are five suggestions for a lifetime of healthy eyesight:

【小题1】

Experts advise parents to bring babies 6 to 12 months of age to the doctor for a careful check. The good news is that millions of children now can have yearly eye exams and following treatment, including eyeglasses.

【小题2】

Long-term stay in the sun creates risk to your eyes. No matter what the season is, it's extremely important to wear sunglasses.

【小题3】

Two-thirds of Americans spend up to seven hours a day using computers or other digital products. Experts recommend that people practice the 20/20/20 rule: every 20 minutes, take a 20-second break and look at something 20 feet away.

【小题4】

As part of a healthy diet, eat more fruits and vegetables each day. Vitamins（维生素）C and E help protect eyesight and promote eye health.

【小题5】

Many Americans use contact lenses to improve their eyesight. While some follow the medical guidance for wearing contact lenses, many are breaking the rules and putting their eyesight at risk. Always follow the doctor's advice for appropriate wear. Otherwise, you may have problems such as red eyes, pain in the eyes, or a more serious condition.