Broccoli, a vegetable, contains a lot of dietary fiber, which can not only maintain intestinal health. Because of the high dietary fiber, digesting this vegetable consumes more energy than it provides. So broccoli/celery are all foods that can really get thinner and thinner. The similar principle is that potatoes have high starch content but high dietary fiber. Digestion and absorption are much slower than fine starchy foods such as rice flour, and the blood sugar level will be lower. Not only can there be enough heat supply, but the supply speed is relatively slow, and the blood sugar level can always be maintained in a stable state, which means that the body will not store excess glucose into fat.