According to research conducted by scientists

[hun fer]

According to research conducted by scientists at Oxford University, and foods that contain substances called "flavonoids" as well as being healthy for the body and helps to significantly improve cognitive abilities to those who regularly consume some extent.
Some foods that contain these substances, black tea, chocolate, coffee, wine and some fruits and vegetables.

For example, chocolate also helps reduce stress and the amount of energy it provides, it is clear that everything in perspective, because of abuse and harmful to the body.

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