Ever heard of drinking water to lose weight? The diet tactic actually works, along with eating foods that contain a lot of water, like fruits and veggies. In a University of Tokyo study, women who ate high-water-content foods had lower body mass indexes and smaller waistlines. Researchers speculate that the water in these foods may fill you up so you eat less. Make the strategy work for you by adding more of these in-season fruits and veggies—each is at least 90% water—to your meals.