Healthy Tip: Gratitude: it won’t replace your flu shot, but it might keep you from turning into a tissue tornado. Grateful folks sleep better, stress less, and have stronger immune systems. All of that translates into fewer colds and infections. Before you reach for the cough syrup, try reaching for your gratitude journal. At the end of each day, reflect on one thing your body did well—digested lunch without drama? Walked you through the day? Give thanks for that.