If you’re trying to kill your gut, dark green veggies like Broccoli are a necessity. Broccoli may have the potential to make you feel a little bloated at first, which seems pretty counter-intuitive for a guy trying to slim down. But since this low-calorie veggie is packed with fiber and nutrients, research shows it will fill you up and help you lose weight. For the same effect, chow down on some kale, spinach, or other dark green veggies.