Many people often skip breakfast to lose weight or because they are busy. However, according to Ms. Pham Thi Thanh Huyen, M.Sc., Department of Adult Nutrition Counseling (Institute of Nutrition), this is a misconception that greatly affects health and work performance.
Because after 8-12 hours of sleep, the body doesn't receive any nutritional replenishment, the amount of sugar stored in the liver decreases significantly, while the brain still needs glucose to maintain the ability to think, remember, and concentrate.
Although the brain accounts for only about 2% of body weight, it consumes up to 20% of total energy. If you continue to skip breakfast after a long night, your body has to mobilize compensatory mechanisms to maintain blood sugar levels, leaving the brain without enough optimal energy. As a result, you may feel groggy, have difficulty concentrating, feel restless, tired, and irritable.