Porridge for breakfast gives you energy and strengthens your immune system, but porridge alone is not very beneficial because it only contains carbohydrates. Any meal should include not only carbohydrates, but also proteins and fats. It is important to include fiber—vegetables or fruits.
Breakfast should be quite substantial, accounting for 30% of your daily intake, so it could be, for example, a salad, an egg, porridge, a cheese sandwich, or some kind of meat dish.