Katie Couric asks Dr. J. Ryan Fuller about bad habits that could be good for you. Dark chocolate, wine, cocktails, coffee, procrastination, and napping are included. It turns out that many things we have been told impair our health may be beneficial. But the amount of the food or beverage may matter, or the outcome of particular behaviors, e.g., procrastination. The interview of Dr. J. Ryan Fuller by Katie Couric explains further why some bad habits can be good for you.