You're unfairly extrapolating from your own experience here -- everyone's body has different chemistry. I have to eat breakfast in the morning in order to feel

You're unfairly extrapolating from your own experience here -- everyone's body has different chemistry. I have to eat breakfast in the morning in order to feel energetic during the day. But specifically, I need a high-protein, high-fiber breakfast. Anything else makes me feel lethargic and tired.