1 . Playing sports is a lot of fun. Getting hurt is not.    1    

Wear protective equipment.

The equipment you wear depends on the sport you play. Helmets (头盔) are the most common protective equipment. They protect your head while you’re playing football, baseball, softball, and so on.

Warm up.

    2     Doing some stretches (伸展) can get you prepared to hit the field. By warming up, you get yourself ready to play. Practicing a sport helps keep you safe, too.

Know the rules of the games.

Traffic lights help prevent crashes between many cars that run on the road together. This works because drivers know the rules and follow them—at least most of the time.    3     When players know the rules of the game, fewer injuries happen. For example, you know that in soccer you can’t come from behind, crash into a player’s legs, or steal the ball. It’s legal and safer to go after the ball rather than the player.

    4    

This is a really important one. If you love sports, you may want to get back in the games, even after an injury. But playing when you’re hurt is a bad idea.    5    

Now you know how to prevent sports injuries. If you follow these rules, you can stay safer while you are playing sports.

3 . Modern science proves that a healthy lifestyle matters much to how long you can live and how well you live.

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Keep a scientific diet. Keep in mind that sugar can be removed from our diet completely.     2    . We only need few grams of protein to keep our body in order.

Be always in good mood. There is a relationship between the mood and health. A good mood keeps you in high spirits.     3    , we can enjoy and learn much without going out. Take a look at some online shops and pick up some bargains, enjoy music and movies and chat with good friends. Just keep happy.

    4    . Two studies show the reasons why teens and adults don’t have enough sleep. With teens, a major reason is mobile phone use; with adults, it’s work. Meanwhile, a third study of young children shows that lack of sleep in early life may lead to serious problems in future. Everyone needs at least 8-hour sleep to recover from tiredness and the hurt caused by hard work in the daytime.

Proper exercise. Do exercise to keep away from fatness.     5    , you don’t have time to do exercise every day, but at least three times a week and 45 minutes each time.

5 . Hiking, that is, travelling on foot, can be a great way to spend time outdoors.     1     With enough preparation, hiking can be a safe sport in which anyone can take part.

Map out your way before setting out. Tell your friends or family where and when you will be hiking, and when you expect to return.     2     If you have a BDS (卫星导航系统), pack it, as well.

    3     Your body can only take in about 1 liter of liquid per hour, so drink 0.5 to 1 liter of some type of electrolyte(电解质) replacement drink every hour when you are hiking in the heat. Carry your water bottle in your hand and drink small amounts often. An adult should drink about 4 liters of electrolyte replacement drink for every 8 hours spent hiking in the heat.

In the case of lightning storms, stay away from tall trees and go quickly to the lowest—lying land you can find. On hot summer days, it’s necessary to bring clothing and a raincoat.     4     In fall and winter, pack warm clothing and matches in case you need to build a fire.

If you have worked out a hiking plan and told your friends or family your plan, help will be on the way as soon as they realize that you are missing. The best course of action is to stay in one position so that search groups can find you. Try to find a grassland or clearing where you may be seen from the air. A BDS is a good helper. With a BDS, your friends or family may easily know where you are.     5    

6 . Our lifestyles today are very busy. We have family, school, sports, entertainment and social activities to fit into a time that seems never enough. We need to be healthy to meet the demands of daily life. But what does it mean to have a healthy lifestyle?

To have a healthy lifestyle, we need to:

◆eat different kinds of healthy food most of the time

◆do exercise often

◆have time to relax

◆get enough sleep to give our bodies time to grow healthy and strong

Read about a normal day in the lives of two children.

Abbey gets up at 7:00 a.m., feeds the dog, and has cereal(谷类食物)and a glass of juice for breakfast. She walks to school with her friend, Julia. She has a bag of chips for a morning snack, drinks water, and has a chicken and lecture sandwich with a banana for lunch. She likes to play soccer with her friends at lunch and morning break time. She walks home with Julia, and plays with a dog for a while. She plays computer games for an hour or two before dinner, then has a shower and does her homework. She watches her favorite television show for an hour, and then usually goes to bed at about 9:30 p.m.

Carl gets up at 8:30 a.m. and has two pieces of bread with jam and a glass of milk for breakfast. His mother drives him to school on her way to work. He eats cookies with juice for a morning snack and a pot pie ordered from the school lunch room with juice for lunch. He likes to play card games with his friends at lunchtime and climb the fixed equipment at morning break time. He catches the bus home, has a cereal bar and a can of soda for an afternoon snack, and then watches television. He has a shower before dinner, and then plays on the computer for an hour or two. He goes to bed at about 10:30 p.m.

No matter which kind of lifestyle you agree on, just remember it’s important to balance all aspects of life.

7 . Science shows that stretching (拉伸) is essential after exercise. Stretching lengthens and mobilizes the connective tissue around your muscle. What’s more, stretching helps your blood flow and even relieves your stress.     1    

You could feel sick. You won’t be surprised to know that when you exercise, you raise your heart rate for a period of time. While it’s great to get that blood flowing, it’s just as important to get your heart rate back to a normal level after the workout is over.     2     As your heart is beating faster and your body temperature is higher, you could pass out or feel sick if you stop too fast. Stretching after physical activity allows a gradual decrease at the end of the episode.

Your muscles will likely become stiffer and more sore. When you exercise your muscles, it produces lactic acid (乳酸), which is actually what causes your muscles to become sore. When you rest between periods of exercise, your body naturally breaks down that lactic acid. One thing that helps your body get rid of that lactic acid?     3    . Stretching helps you distribute oxygen throughout your body, which can reduce lactic acid production and rid your muscles of any accumulation of lactic acid.

    4     Flexibility is closely related to injury risk. Poor flexibility will cause you to have muscles that get tired quicker and joints that are more likely to suffer from injury. Besides, your weakened range of motion will lead to less blood and nutrients to your joints.     5     Sticking to stretching exercise after physical activity can hopefully improve your flexibility.

Rope skipping is a sport suitable for people of all age. People skip rope for fun and exercise. Every student was able to learn to skip. You can skip alone or with your classmates. If you skip alone, you will need short rope about double the length of your high. You should turn the rope slow so that you can skip safely. It might help with if you can sing a rhyme while skips. When you skip rope, your heart beats fast than usual and your body is stressed. Therefore, stop for a rest after you injure yourself.

So, pick up a rope, finding a silly rhyme and start skipping.