What’s in them: Soluble fiber
The belly-fat connection: For every additional 10 grams of soluble fiber (which legumes like lentils have a lot of) people ate per day, they gained 3.7 percent less visceral fat over five years. When they threw some moderate exercise into their routines, they kept off twice as much belly fat as those who didn’t break a sweat.
More ideas of what to eat: In addition to legumes, load up on fruits, vegetables, seeds and whole grains—they’re also high in soluble fiber. If you need some ideas, check out our list of 15 fiber-rich foods for a happier stomach.