Nowadays, most of the white-collars are mental workers. Long-time consumption of the brain power will cause a lot of diseases. As a result, mental workers have to eat more food which can invigorate brain and improve intelligence.

First, peanut:
Nuts are the necessary food for the mental workers, especially peanut. Peanut contains a large number of lecithin, which is an important nutrient for the nervous system. It can slow down the decline of brain function and prevent cerebral thrombosis. What's more, the study also finds out that, often eating peanuts can improve the blood circulation, and it can also improve the memory and slow down the aging process.

Second, milk:
Milk is not only rich in protein and calcium, but also contains a variety of essential amino acids. In addition, the calcium contained in milk is very easy to be absorbed by the body. At the same time, it is also an important and indispensable nutrient for the metabolism of the brain. Besides, milk also contains vitamin B1, which is very beneficial to the nerve cells. Many mental workers would often suffer from insomnia. In such a case, they can drink a glass of warm milk before going to bed every night, which can achieve the effect of tranquilizing the nerves, so it is very effective to help people fall asleep.

Third, fish
Fish can provide great amounts of high-quality protein and calcium to human brain, and at the same time, it also contains unsaturated fatty acids, which can prevent vascular sclerosis. Research has proved that, if the mental workers often eat fish, it not only can protect the blood vessels, but can also promote the activity of brain cells.

Fourth, spinach
Although spinach is an ordinary food in daily life, in fact it is very beneficial for the brain. This is mainly because spinach contains a large number of vitamin A, C, B1 and B2, so it is one of the "best suppliers" for the metabolism of brain cells. At the same time, spinach also contains plenty of chlorophyll, which also has the function of invigorating brain and promoting intelligence.

Fifth, corn
Experts advise mental workers to eat more corns in daily life, because corn contains various kinds of saturated fatty acids such as linoleic acid. All of these saturated fatty acids have the effect of protecting cerebrovascular and bringing down the level of blood fat. Especially, corn contains a high content of glutamic acid, which can not only promote the metabolism of brain cells, but is also very effective to invigorate the brain and improve intelligence.