Ăn nhiều sôcôla hơn. Uống nước ép củ dền. Bổ sung "siêu thực phẩm" vào bữa ăn hằng ngày. Cân nhắc uống thực phẩm chức năng.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
Studies suggest that the flavonoids found in cocoa beans may increase blood flow to the brain. Flavonoids can also be found in red wine, red grapes, apples and berries. Teas, particularly green or white teas, are another excellent source of flavonoids.  Make sure that your overall caloric intake remains within healthy limits. Increasing fat or sugar levels to your daily diet may have negative consequences. Research on the beneficial effects of flavonoids is still preliminary. Drinking beet juice