If you are trying to lose weight walking for 20-minutes half an hour before dinner may help you drop those kilos. It is an excellent way to rev up your metabolism and burn off those extra calories. When you walk your appetite is also diminished due to elevation in body temperature. Walking a few steps before dinner also allows your body to use the stored fat to fuel your workout. According to a study of 10 obese women conducted at the University of Glasgow in Scotland 20 minutes of walking increased sensations of fullness as effectively as a light meal.