The brain is a complex organ that requires nutrients and enough rest to function better. That is why it is essential to eat better to avoid getting exhausted during activities that require brain power and too much thinking. Analytical exams especially problem solving tests in math can really subject the brain to stress as you try to remember formulas and analyze the question. That is why it is just normal to feel hungry after an exam since the brain has took so much of your energy that almost all your energy reserves are depleted. But consuming too much food before an exam is also not helpful at all. It is best to prep your diet with vegetables and fruits prior to an exam.
Fatty foods will only make you feel sleepy and tired. If you think that sugar can energize you, you better think twice about eating a bar of chocolate. Simple sugars will only energize your for a short while and your body will immediately get drained thereby ending up feeling too sleepy. Try to eat better with nutrient-filled food choices by simply getting more of fruits and vegetables in your daily meals. Still, never avoid meat as you also need soluble protein and other nutrients found in meat and dairy products. Just be keen in including the right portion size of meat products and still get rid of the fatty sections when preparing meat dishes.
Vitamins and health supplements may be helpful to the body; however, do not just easily believe that Vitamin B supplements will give you that brain or memory boost. You will do better when you eat better since you are introducing natural and soluble nutrients from organic sources. Perhaps some brain boosting herbal products may help but taking in real food that are rich in omega 3 and other vitamins and mineral are more helpful than relying your academic performance on pills. Vegetables have more to give than popping a pill. Of course, you will never do better academically if you do not study. Hence, study better by maintaining a balanced diet and avoid starving the body. Eat on time and get fill your brain with happy thoughts by including some simple exercises.