Will lighting settings affect people’s appetite? Will lighting settings affect people’s appetite? The answer is yes. According to research, people eat twice as much under neon lights as under comfortable lights. And this feature also has many applications in our real life. For example, buffets in restaurants generally use soft, bright and comfortable lights, which will greatly reduce people's appetite. Not only that, under bright lights, people are more inclined to choose healthy food, which means that they will reduce their appetite for food. The choice of oily foods such as barbecue is precisely because of this, it reduces customers' demand for barbecue, thereby greatly reducing costs and increasing profits. In some restaurants or bars and karaoke bars that require a la carte, colorful lights are generally chosen to increase customers' appetite, increase demand, and thereby increase business profits. Not only can lights play such a role, but music can also have such a role. We found that some loud music is usually played in some hypermarkets or noisy shopping malls selling low-end products. Because this kind of music can excite people, thereby increasing people's desire to buy, and can also stimulate consumption. In some sentimental places selling luxury goods, some soft music will be chosen to allow people to better integrate into this sentimental scene and also to stimulate consumption. In fact, the functions of lights and music are the same. Their purpose is to arouse the excitement of the people in the scene, draw them into the scene, and achieve the goal they want.