Breakfast is extremely important for a person’s health. Modern physiologists have shown that the normal blood sugar level of a person on an empty stomach is 80-120 mg/100 ml of blood. If the blood sugar level is too low, one will feel hungry and tired, and even experience dizziness, unsteadiness or palpitations. The maintenance of blood glucose level in the body depends mainly on the type and quantity of food eaten at the first meal of the day. Without breakfast, it is difficult to maintain the normal blood sugar level in the body, and hypoglycemia will occur, which directly affects work, study and body. At the same time, there will be a lack of energy, poor responsiveness and stress reduction, serious cases can be deficient, hypoglycemic coma, etc. Breakfast is not eaten, the night before to the next day noon lunch time is too long, this intermediate gastric juice and hormone secretion will be out of balance, the result will cause paranoia. Partial eating will have adverse effects on health. Some people do not eat breakfast in order to lose weight, which is also wrong. In fact, eat one less meal can not lose weight. Because there is a limit to hunger, empty stomach into lunch instead of eating more. Breakfast must be eaten, because the secretion of gastric juice in the morning is not strong, the stomach does not have any food, when the absorption is stronger, especially the absorption of vitamins and minerals is the best time of the day. Breakfast control calories, more protein intake, this is the principle of weight loss, but also the essence of health. People who often do not eat breakfast, after a long period of fasting if wolfing down lunch, but also prone to dry thirst, committing serious post-food sleepiness; fasting for too long, the secretion of digestive juices will be reduced, resulting in dysfunction, which is also the main cause of gastrointestinal disease. In foreign countries, breakfast is the most important meal of the day for people, if a rich breakfast daily, can make you live longer. This is what the University of California found in a recent survey. Among 7,000 men and women who were followed, it was found that people who habitually skipped breakfast had a 40 percent higher mortality rate than those who ate breakfast. In addition, a Hopkins University survey of 80-90 year olds found that the only thing they had in common for longevity was – the insistence on eating a rich breakfast every day. Studies have also shown that when people skip breakfast, especially teenagers, it directly affects intelligence levels. Some scholars have studied the relationship between the type of breakfast and the intellectual development of children and adolescents aged 8-13 years old found that children who ate a high protein breakfast had the highest average IQ score, followed by children who ate a high sugar breakfast, while children who skipped breakfast had the lowest IQ score. This shows that for children and adolescents in the growth and development stage, not only should we eat breakfast on time, but also pay attention to the quality of breakfast. From a nutritional point of view, in addition to hot milk or porridge, breakfast should also have cereal, animal protein, eggs, meat, fruit or vegetables, and food containing a small amount of fat and sugar.