请根据以下提示，写一篇以“How to keep healthy"为题的英语短文，向某英语周刊投稿。

提示：

要求：80词左右，可适当发挥。文章的标题，开头和结尾已给出，不计入总词数。

How to keep healthy

  It's important for students to keep healthy．Here are some ways to stay healthy.

                                                            

If you follow these ways，you will be healthy．