Over the Fourth of July weekend, four friends and I were all hit with a doozy of a cold, the worst. It even made us question the accepted belief that more people get sick in the Winter. But viruses still survive in the Summer sun, and some people can't fight off infection as well as others. There are ways to protect yourself, which is a must, given all the traveling, eating, and lounge time taking place this season. Here are ways to take care of yourself so you'll stay far away from a weekend full of Kleenex, cough medicine, and mega doses of vitamin C.