Is it better to go walking before you eat or after you eat?

For light exercise such as walking, it really shouldn't matter. Being completely starved when walking isn't much fun at all, but assuming you're well energized, walking before isn't going to create any problems. Unless you happen to consume a huge meal, it's unlikely you'll cramp doing something as light as walking, so walking after isn't a problem either. I'm sure some arguments about metabolism and weight loss will be made, but overall, it's just good to be somewhat active, whether or not it's the most perfectly optimum calorie burning activity.