Everyone hopes to live happily in the world. Physical exercise is indispensable to a happy life. There is a famous saying: "Life lies on exercise." Although you will not necessarily die without regular physical exercises, they'll certainly help you live longer and more healthily.
Exercise is good for us to build our bodies. It helps coordinate the different parts of our bodies when we have sports. For example, we must try our best to coordinate the movements of the arms and legs when we play basketball, or we won't be able to shoot the basket. Exercise also benefits our organs. It lets the heart beat faster than usual, and then helps enlarge the blood vessels to protect us from heart attacks.
锻炼对我们的身体很好。运动的时候能够帮助我们 协调身体的各个部分， 例如，打篮球的时候我们必须尽力使手脚协调，否则我们不会投中篮。运动也有利于我们的器官。它让心跳比平时快，然后帮助扩大血管来预防心脏病。
Exercise can also contribute to the development of our ability to response agilely. For instance, when you play table- tennis, you must try to reflect as quickly as you can so that you may fight back at the right position at the fight moment.
Exercise can also contribute to improving our mood. When you do exercise, you move a lot, and you have to be more active. It helps you become more optimistic.
Exercise will fill your life with various contents and make it more colorful.
What's more, exercise will help you get rid of your inertia. If you keep doing exercise regularly, you will never be a lazy person. Therefore, exercise has great effect on one's character.
In a word, exercise is helpful, important and absolutely necessary.
Though PE class is a part of children’s education, many teenagers didn’t form the habit of doing exercise, they don’t have interest in sports. Enthusiasm for sports is of great importance, young people should treat it as their integral part of education.
On the one hand, promoting enthusiasm for sports among teenagers helps them keep a healthy lifestyle. In the school, students are forced to take exercise in the PE class, they need to join certain activities. In this way, students live in a healthy lifestyle, they won’t get sick easily. But after they leaving school, no one forces them to do so, so they are lazy to take exercise, their bodies gets weaker.
On the other hand, the enthusiasm for sports can help students enhance their sense of teamwork. As we known, most sports need more than one person to do, like badminton and table tennis, these sports needs more than two people. When students are playing badminton, they need to cooperate, so that they can defeat others, if they just keep an eye on themselves, they game can’t be played. Doing these sports will bring students the sense of teamwork, which is important for their career.
Sport plays an important role in our daily life. Most of us begin our day with some kind of exercise or sport. Athletics is part of our university curriculum. Many students play on either the departmental or university sports team after a hard day of class.
Some people take sports far too seriously. Some people are only interested in how their favourite sports team does: they don't care much about their country or the rest of the world. These people often get into fights if their team loses.
When I have time for sports there is one that I like more than any other. I find bas ketball both a physical and a mental challenge. Runing, jumping, and shooting, are also enjoyable and healthful sports.