Study show that by eating breakfast directly correlates with a more positive academic performance. Eating breakfast also increase a person diet quality and body weight.A six-year study compared the mental and physical efficiency of a group of adults throughout the day, some of whom ate healthy nutritious breakfasts while others did not. When compared to those who ate breakfast, the people who did not became less efficient as the day went on. Their productivity improved after eating lunch, but by the end of the day their work completion was slower than those who had eaten breakfast. For children, a good breakfast is even more important. Children who do not eat a good breakfast become tired in school and have shorter attention spans, especially late in the morning. In one study, test scores of children who did not eat breakfast were generally lower than those who had eaten a well-balanced morning meal.