假设你是李强，你的朋友Jenny向你询问如何保持健康。请你给他发一封邮件提些建议。内容要点如下：
（1）注意合理饮食。多吃鱼、肉、豆类等，特别是新鲜蔬菜和水果，不要吃太多甜食。
（2）注意锻炼身体。劳逸结合，多参加体育活动。
（3）保证充足的睡眠。不要熬夜，每天至少睡8个小时。
注意：（1）词数：100左右；
（2）可适当增加细节，使行文连贯。
Dear Jenny，
___________
Yours，
Li Qiang

【考点】提纲作文；身心健康；文娱与体育．

【答案】Dear Jenny，
   In reply to your last letter，I'm writing to offer my suggestions about how to keep healthy.
   First of all，having a reasonable diet is necessary，which means we must eat more fish，meat，beans，especially fresh vegetables and fruits instead of eating too much sweet food.In addition，taking exercise will build up our strength and get us relaxed.We should combine work and rest，and participate in more sports activities.Besides，enough sleep is of equal importance，because it will allow our body to readjust and gain energy for the next day.So don't stay up late and you had better sleep at least 8 hours a day.
   I sincerely hope you will find these proposals helpful.
Yours，
Li Qiang