During the first day your aim should be to detoxify your body and remove the impurities from your system. So you should try to include only fruits in your diet. Only including the fruits in the entire day will help you to flush out toxins from your body and it will cleanse the system for intake of the food in further days. Eat fruits that are high in water content and less in sugar content. Fruits such as watermelons, strawberries, pomegranates, apples and lemons are rich source of fibers and will help your digestive system to flush out toxins. Don’t eat fruits like mangoes, bananas and grapes because they have high sugar content. Whenever you feel hungry on the first day just consume as many fruits as you want.