Allright the best thing to do to prevent getting the cold or sick is taking a pill called Echinacea. This pill helps keep your immune system healthy and is very good at preventing you of getting sick. I take two every day during these cold days of spring and winter. I didnt get sick once this year, I usually always get sick. So I think i owe it to that. You can buy it at like walmart, and drug stores. I recomend it. I also think you should get your vitmens and stuff that helps as well.