作文一直可以说是考试的重难点，也是让考生最头疼的内容，作文除了需要我们有一定的词汇积累，也需要我们不间断的练习和总结，练习多了才能熟能生巧，才能下笔成章，下面来一起练习一下这篇 四级作文吧，希望考生能够更好地为12月份的四六级考试提前做好准备。

　　怎样保持健康

　　How to Keep Fit

　　a healthy body is very important to every one of us. when you are sick, you feel painful all over your body, have no energy to work; and the only thing you want to do is lying on the bed.

　　when you are healthy, you can eat well, sleep well, sing and jump happily, do all the things you like to enjoy life.

　　the methods to keep us fit vary. in the morning, you can get up early, go outdoors, breathe the fresh air, and do physical exercises. running and swimming are extremely helpful to keep one fit. if you are a busy person and have no special time allocated to do these things, there are still some ways useful for to keep fit. the easiest way is to walk to your office instead of riding a bike or taking a bus.

　　you also have to take a routine physical check - up. your doctor will know the condition of your body most clearly, and he will give you the most valuable advice to keep fit. you should always try to make yourself happy. if you feel happy, you can eat well, sleep well, and your body is sure to be in an excellent condition.

　　health is the most valuable possession a person expects in his life. try every means to keep fit is my advice to the people who want to live a happy life in this beautiful world.