The trouble is, colds can linger longer or get worse as a result of lifestyle habits (like eating foods that undermine your immune system) and behaviors, including those you might otherwise have thought were healthy. Below, experts dish on seven things that could make you feel worse or prolong your recovery from the common cold. RELATED: 5 Easy Things You Can Do to Make Your Flu Shot Even More Effective But do note: “Sleep may be more important for cold prevention than cure,” she adds. In one clinical study, individuals who slept under five hours a night were almost three times more likely to develop a cold than those who slept over seven hours per night. RELATED: This Is What Happens to Your Body When You Don’t Get Enough Sleep RELATED: 3 Immunity-Boosting Ingredients RDs Want You to Add to Your Diet Right Now RELATED: How to Tell the Difference Between COVID-19 and Flu Symptoms (Because They Can Look Very Similar)