Does drinking coffee affect sleep?
Many people have the experience of being too excited to sleep after drinking coffee, because there is a conductive substance called adenosine in the body, which can control nerve activity. produce slow breathing, reduced mood, reduced gastric acid secretion and diuretic effects. On the other hand, caffeine will fake adenosine, making the body think that the effect of adenosine has taken place, making you feel energetic, increased stomach acid, urinate more frequently, and naturally less willing to fall asleep.
It is worth noting that the brief awakening caused by this caffeine does not mean that physical strength is really restored. In addition, everyone has a different metabolic rate of caffeine, so their sensitivity to caffeine varies, so some people don't feel that their sleep is affected after drinking coffee. Therefore, a cup of hot coffee after getting up in the morning can exhilarate the body and mind and make the mood more comfortable, while it may cause insomnia at night.
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The reason why the black coffee is getting more and more sour
Many people drink black coffee, and after drinking it, they will find that the coffee becomes more and more sour. In fact, because the coffee bean itself is a kind of fruit, it is rich in tannin. When the temperature of the coffee drops, the tannic acid is released, and when the temperature is lower, the human taste is more obvious to the sour taste. So we will obviously feel that the coffee has obviously become sour after cooling. That's for sure,
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Methods of making coffee that are harmful to one's health
There is only one special way to make coffee that is bad for your health. In Scandinavia, according to tradition, people brew coffee for hours to extract more coffee oil from it. The coffee brewed in this way contains a lot of cholesterol and can easily lead to heart disease and cancer. The taste of this coffee is also very different from that of coffee prepared by other methods.
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