The refreshing effect of coffee is not as beautiful as you t
In theory, caffeine does have a role in refreshing. When people do not rest for a long time, they will naturally feel tired and tired. When the body is very tired, it tells the brain through a signal substance called adenosine. And the more tired the body, the more the substance.
However, in order for the brain to know that "I am tired," the substance must be docked with a specific receptor in the brain. Caffeine in coffee can also bind to this receptor – and blocking the transmission of messengers is equivalent to blocking the normal binding of other receptors. In this way, the brain can't receive the signal from the fatigue material, and it won't feel tired. Moreover, it can be used for 4~6 hours to play the role of “lifting”. However, the adenosine substance that makes people feel tired has not decreased. Therefore, the refreshment of caffeine is just a feeling of cheating the body.
Many people are used to drinking coffee because coffee can be refreshing. In fact, its refreshing effect is not as good as everyone thinks.
There are no fewer than a few hundred ingredients for coffee. Among them, caffeine is undoubtedly the most important, many people attribute the credit of coffee to caffeine. Although there is a "decaffeinated" coffee, it is not a "real" coffee for most coffee lovers.