What are natural ways to cure or prevent a Cold?

I need ya'lls help! What are somethings that ya'll do to keep from getting sick? Or when you know you are about to get sick what do ya'll do to stop it? I would prefer more natural ways but anything helps!
http://answers.yahoo.com/question/index?qid=20130213061516AAb7DW6
I posted this question on Yahoo Answers, so you can answer it on there or here.