【正确答案】
Physical training is very important. You should be very careful with your health in daily life. When you study at high school, you must do physical training every day so as to prepare yourself for busy study and the social life in the future.
In physical training, the key is perseverance. Whether it rains or shines, you must overcome your laziness and continue training. It is also essential for you to select a suitable way of exercise and to keep on doing step by step.
In a word, it is a well-known fact that physical training can develop one's character, so why not go out of your classroom to the playground to exercise a couple of hours every day?