目前青少年压力过大，为排解压力一些青少年染上了一些恶习，如吸烟，饮酒等，请你以学生会的名义参照以下提示用英语写一封倡议书，呼吁中学生要“养成好习惯，健康过生活”。写作要点如下：
1. 青少年中存在的恶习以及它们的危害。
2. 好习惯的重要性和必要性。
3. 呼吁你校学生养成好习惯，过健康生活。
注意：1. 词数100-120。   
2. 开头结尾已给你写好不计入总数。  
3. 适当增加细节，使文章内容充实，连贯。
Dear students,
In the present world, we teenagers are living under great stress.                                                                              
                                                                             
                                                                             
                                                                             
                                                                             
                                                                             
                                                                             
                                                                             
That’s all. Thank you!