The cells in your body require nutrition to function at the most efficient levels. Because energy is created through the processing of nutrients, not providing nutrients to your body is causing you to feel tired and weak. But if you give your body a mix of carbohydrates, proteins, and fats, you will allow your cells to become nourished again, allowing them to complete the process of respiration. This is the process in which they convert food to energy. Without the food, this just isn't possible.
While it might seem like skipping a meal adds up to a larger calorie deficit and thus weight loss, this actually isn't the case. Study after study has shown that skipping breakfast can actually lead to weight gain. This is due to the fact that the person skipping the meal begins to think that they can eat more throughout the rest of the day because they didn't eat breakfast. While this is slightly true, the amount that the person eats to compensate for their breakfast calories is usually far more than breakfast alone would have been.In addition, when you are trying to lose weight, you want to keep your blood sugar levels steady in order to keep your hunger levels steady. But when you skip breakfast, this doesn't happen as easily. You start of the day in a blood sugar deficit, which can lead to hunger pangs and eating binges.
There is also research indicating that skipping meals can actually slow your metabolism and cause you to hold onto extra weight. Studies are showing that people that eat breakfast have an easier time losing weight, even if they are eating more calories than they used to eat. Some speculation is that the additional calories in the morning are kick-starting the metabolism for the rest of the day.Since you already known that foods affect your body on a cellular levels, it's not surprising that your brain and focus can also be affected by a lack of nutrition. If you don't start off your day with a healthy breakfast, you can find yourself unfocused and tired, making that morning meeting impossible. You can't steady your brain or process information as quickly because your body simply isn't nourished enough to handle such complicated tasks.
