Nowadays students' physical fitness is declining year by year. I think there are some reasons.
的学生体质在逐年下降。我认为是有原因的，
Students have too much homework to do, so they have little time to have sports. Some students eat too much junk food. That's also bad for their health.
的学生有太多的家庭作业要做，所以他们很少有时间做运动。有些学生吃太多垃圾食品。这也不利于他们的健康。
Then, how to keep healthy? Here is some useful advice. First, students should do more exercise. Second, students should eat a balanced diet. They should eat more vegetables and fruits, and try to eat less junk food. Finally, enough sleep is also very important.
那么，如何保持健康呢？这里有一些有用的建议。首先，学生应该多做运动。第二，学生应该均衡饮食。他们应该多吃蔬菜和水果，尽量少吃垃圾食品。最后，充足的睡眠也很重要。