Eat water-rich foods and you’ll eat fewer calories overall. A body of research out of Pennsylvania State University finds that eating water-rich foods such as zucchini, tomatoes, and cucumbers during meals reduces your overall calorie consumption. Other water-rich foods include soups and salads. You won’t get the same benefits by just drinking your water, though. Because the body processes hunger and thirst through different mechanisms, it simply doesn’t register a sense of fullness with water (or soda, tea, coffee, or juice).