Black coffee (except instant) is good for brain health-caffeine and coffee aroma

A small cup of black coffee can quickly wake up the brain, in the wonderful coffee aroma, the fatigue of the brain immediately reduced, from the original chaotic state into a clear sky, refreshing and pleasant. After a cup of espresso or hand-brewed coffee is ingested, it not only satisfies our taste needs, but also relieves brain fatigue, promotes nerve excitation, and improves brain efficiency. Perhaps this is one of the reasons why coffee has become a worldwide drink. So, what exactly does coffee contain that can have such a magical effect?

Coffee and caffeine.

Caffeine contained in coffee has the effect of relieving fatigue and promoting nerve excitation, thus improving mood and pleasure. Of course, the time at which these effects of caffeine begin to take effect after coffee is consumed and how long they last in the body varies from person to person. So some people are highly sensitive to coffee, some people drink three, five, seven, eight cups a day, and some people drink countless cups a day. According to studies, caffeine generally begins to act about 10 minutes after ingestion, and generally lasts for 2- 3 hours in the body. Relatively speaking, its effect and duration of action are higher in men than in women. Another new study shows decaf coffee also has an effect, but only for a shorter period of time.

Coffee and coffee smell.

Caffeinated beverages include black tea, green tea, cocoa, etc., but the most widely known is coffee. Why? This is related to the strong aftertaste left in the brain after drinking coffee.

The aroma of coffee is so strong that even non-coffee drinkers like to feel it. Recently, professional coffee shops have begun to appear in some shopping malls and hotel lobbies, among which the important role is to attract customers through coffee fragrance.

Caffeine, which has the effect of relieving fatigue, contains ether, carbonic acid, ammonia and other flowers and substances and more than 20 trace elements. These elements interact with each other to produce a strong coffee fragrance and charming taste. A university in Japan has measured blood volume to study the effects of coffee aroma on the brain. The results show that people increase blood volume in the right brain region regulating pleasure at the moment of smelling coffee aroma. Even without coffee, just smelling coffee can increase sensitivity to pleasure, which in turn improves mood and concentration.

Of course, we can smell coffee when brewing instant coffee, but it is not the original aroma of coffee but the addition of essence creamer, so instant coffee is not only harmful to the human body but harmful to health. When instant coffee is compared with freshly roasted coffee, it is easy to distinguish the aroma of the two, just as fresh fruit and fruity aromas are different. In addition, some hotels, cafes and other places in order to attract customers with coffee fragrance, but not so many fresh coffee beans, they continue to spray coffee-scented air freshener, if used as an air freshener, but if this to confuse the customer's sense of smell, it is not advisable.