Skin-diving（轻装潜水） is a new sport today. This sport takes you into a wonderful new world . It is like a visit to the moon! When you are under water, it is easy for you to climb big rocks , because you are no longer heavy .

Here, under water, everything is blue and green. During the day ,there is enough light .When fish swim nearby , you can catch them with your hands .

When you have tanks (箱) of air on your back, you can stay in keep water for a long time. But you must be careful when you dive in deep water. To catch fish is one of the most interesting parts of this sport. Besides（而且），there are many other uses of skin-diving. You can clean ships without taking them out of the water. You can also get many things from the deep sea.

A lot of people play sports, but very few people become sports professionals. Then why should you play sports if they aren’t going to be your future?

There are actually a lot of good reasons to play sports. First of all, sports are a great way to exercise. Exercising keeps you healthy and strong. It also helps you stay in a good state. When you exercise, your body produces endorphins (内啡肽). Endorphins give you more energy and make you feel happier.

Sports are important for everyone, but they are especially important for young people. They teach young people about winning and losing. Also, they teach young people how to communicate and work as a team. For example, when you play football, you must learn how to communicate with your teammates and work together. Sports teach young people to respect their coaches, teammates, and people they fight against as well.

Many reports say that sports help young people stay out of trouble. If a young person plays sports, he or she is less likely to have problems. This is because sports teach people about rules. They also help people know that if they work hard, they might succeed.

Another good way of sports is that they make people leave their houses. These days, a lot of people spend too much time watching television and playing video games. When you play sports, you go outside and exercise in the sun. You take in fresh air. All of these things are important.

Whether or not you will become a sports professional doesn’t matter. Sports will help you become a better and happier person. Sports will help you make friends and stay healthy. Here is another good reason to play sports: Sports are fun.