Chocolate can first provide energy for the body, because the fat and carbohydrates contained in chocolate are sugar. In nutrition, 1 gram of fat produces 9 kilocalories, and 1 gram of carbohydrate produces 4 kilocalories. Eating chocolate can play a role in relieving fatigue by providing energy. Some ingredients contained in chocolate, such as long-chain fatty acids and lipopolysaccharides, have a good regulatory effect on the nervous system. In terms of stabilizing mood, relieving mental tension and maintaining a good mood, chocolate can also play a positive role and effect.