You can ensure your body, and immunity runs smoothly by rounding out your plate with plenty of colorful servings of fruits and veggies, plus 8 to 10 glasses of water a day, at the very least.Also, these chewable tablets are easy to take with you, and contain 14 vitamins and minerals and herbs, including zinc, and Echinacea, which have been shown to help shorten the duration of a cold.Sip hot tea;