Summarize this article:

Protein has the ability to increase your brain’s production of neurotransmitters, and increases norepinephrine and dopamine levels in turn – all of which increases your alertness and problem-solving skills. This is especially important for breakfast to get you ready and raring to go for the day. Sugar for breakfast just leads to a crash in a couple of hours, slowing you down, and leaving you even hungrier than before. Dark chocolate is full of antioxidants and loaded with flavonols. It’s also high in magnesium, vitamins A, B1, B2, D, and E.3 It's a powerhouse of antioxidants that helps fight off free radicals. This makes sure our bodies stay healthy and strong. Not too much though, of course. Anywhere between 1 and 5 ounces a day is good. This little nutrient increases blood flow to the brain. You can find vitamin B in green, leafy vegetables, whole wheat, meat, eggs, and cheese. Just be sure that you don't get too much either! Talk to your doctor about the appropriate amount for you. Folic acid, riboflavin, thiamine, and niacin are all part of the structure of vitamin B. When you get vitamin B, you get a powerhouse of goodies all in one. Many studies have shown that a healthy diet is linked to a higher IQ, especially in children. To keep your brain firing on all pistons, stay away from junk food like cookies and chips and processed food – do the cooking at home to help your brain and your budget. Vegetarians have higher IQs on the whole, by about 5 points for both sexes. To get the extra boost, make "Meatless Monday" a regular thing throughout the week. IF, or intermittent fasting, has been shown to lead to increased brain power and higher level functioning. IF is where you don’t eat for 16 hours, and eat plenty for 8. It may or may not mean caloric restriction, depending on how you do it. You can also use this technique to manage your weight. Many fast intermittently and see great results in terms of weight loss. Just make sure you're doing it safely – fasting isn't for everyone (the elderly, expecting mothers, young children, etc.).

Summary:
Eat plenty of protein for breakfast. Snack on dark chocolate. Get more vitamin B. Avoid processed and junk foods. Consider fasting intermittently.