This is especially important for the brain because its primary fuel source, glucose, cannot be stored for long periods of time. Breakfast improves strength and endurance in the late mornings. The strength and endurance received from eating a healthy breakfast improves physical and cognitive performance. These improvements lead to a better attitude towards school and work. Hunger from skipping breakfast consistently leads to a decrease in performance of any activity requiring concentration.
Breakfast prevents irritability and fatigue.
After an eight hour fast, your body needs energy and nutrients to run efficiently. If your body does not get these needed components, fatigue and irritability may result. Breakfast is important because it is difficult to obtain all needed nutrients in only two meals. Without breakfast, a lower overall intake of nutrients such as calcium, iron, and vitamin C are often not made up during the day's remaining intake. Excuses why people do not eat breakfast.