Phosphorus is called the salt of wisdom, and bananas contain phosphorus. At the same time, bananas are an excellent source of tryptophan and vitamin B6. It is also rich in minerals and high-quality protein, among which the potassium ion content is the highest, and a medium banana contains 45 1 mg of potassium. Eating bananas can strengthen the brain, improve eyesight and refresh the mind. Although bananas are rich in nutrition, they are low in calories, so you don't have to be afraid of being fat if you eat too much.

2. Macroalgae

Kelp is rich in iodine, which helps to dredge blood vessels, maintain the body's acid-base balance and resist fatigue. However, kelp also contains a lot of linoleic acid and lecithin, which can strengthen the brain and refresh the mind. Kelp, like other seaweeds, contains sulfones that are indispensable to the human brain.

3. Pumpkin

Pumpkin is rich in vitamin A and an excellent brain-benefiting element-β-carotene. Pumpkin tastes sweet and tastes flat, which can refresh the mind and improve the symptoms of neurasthenia and irritability. Eating once a day is very effective for nourishing the brain.

4. Walnut

Walnuts nourish the brain, which is well known. Walnut is rich in unsaturated fatty acids, which can avoid cerebral vascular occlusion, strengthen brain and improve intelligence. But walnut is a kind of dry food, so you can't eat too much, otherwise it will easily cause constipation and nosebleeds.

5, quail eggs

Quail eggs can be said to be the best brain tonic before the college entrance examination. Although the protein and fat content of quail eggs is equivalent to that of eggs, the lecithin and cephalin in quail eggs are 3-4 times higher than those in eggs. These two substances are indispensable nutrients in higher nervous activity. If you eat it regularly, the effect of nourishing the brain is particularly good. The reason why quail eggs have a good brain-nourishing effect is that the content of vitamin D in quail eggs is higher than that in other poultry eggs.

7. Tofu

The latest research found that a large amount of lecithin in tofu is the raw material for acetylcholine to complete brain information transmission. Acetylcholine deficiency is the inducing factor of brain retardation and Alzheimer's disease. Eat 1~2 meals a week. Especially in winter, there is little activity, waste in the body is easy to accumulate, and brain activity is slower than in summer, which is a good time to eat tofu. Although soybean contains a lot of plant protein, it is not easy to digest and absorb. Only when tofu is made can the absorption rate rise to over 90%.

Although brain tonic can achieve its goal through food, it still depends on the protection of the brain at ordinary times. Adequate sleep is the premise of brain tonic. Although the pace of life is accelerating now, we still need to ensure adequate sleep. Children's adequate sleep time is 8 hours, and adults are 6 to 7 hours. Give yourself a good sleep, plus daily food supplements, I believe that the brain will be able to run for yourself for a long time.