Research continues to show us that antioxidants help prevent cancer, heart disease, age-related macular degeneration and aging in general because they fight free radicals in the body. The trendy so-called superfoods are the ones bursting with antioxidants — acai, goji berries, blueberries and pomegranate have become the superfood darlings. But antioxidants come in surprising forms too, like in vehicles once considered more vice than health food, such as coffee, red wine, and yes, chocolate. In fact, that's one of the areas where chocolate, especially in the form of hot cocoa, shines. Here's how.