Dear Emily：I'm truly sorry to hear that you have a bad cold.I know that you always have a bad cold so I want to give you some uesful suggestions.First,you should do exercise regularly.Second,you ought to eat some healthy food.As the saying goes :'An apple a day keeps a doctor away.' Third,……（麻烦自己想一条建议）I hope that you will be healthy soon.Yours Lily