as playingballgames ,running ,swimming and jumping rope(绳子). then ,you should pay attention to your diet or meals don’t eat too much meat and suger but more vegetables and fruit.third , you need enough sleep or rest . next,keep yourself happy.as people often say smiling makes younger.last ,you mustn’t drink wine or smoke .they are bad for your health. that is my advice.i hope you are healthy and enjoy your life．thank you,bye!
范文2：dear boys and girls:
i’m talking about / here is my advice about how to keep health/fit?today ,many teenagers are unhealthy,because they do less exercise, eat more junk food,isn’t enough time to sleep. if we keep fit,we must keep taking exercises every day .eat lots of fruit and vegetables .sleep for about 8 hours a night.stay away from cigarettes/smoking/drugs毒品 .early to bed, early to rise/get up .breathe (呼