Too much coffee is bad for men. Boys should not drink too much coffee.
It has become a habit for many people to drink coffee to refresh themselves. But they may not know that excessive consumption of caffeinated drinks such as coffee or cola can affect libido and affect erections in men.
Coffee is refreshing because the caffeine it contains stimulates the sympathetic nerves. Sympathetic and parasympathetic control of the human brain rise and fall each other: the former controls all people's activities during the day, and under the stimulation of the external environment, it will make people excited and exhilarated, while the latter specializes in sex-related activities such as nocturnal erections. It relaxes people. When the sympathetic nerve activity is frequent, the relatively weak parasympathetic nerve will be suppressed, with clinical manifestations of decreased libido and inhibition of erection.
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Coffee drinking precautions Coffee drinking should not exercise immediately
Drinking coffee can improve the excitability of the central nervous system, make the mind clear, increase the sense of pleasure during exercise, improve the agility of people during exercise, which is very beneficial to exercise. However, it should be noted that do not exercise immediately after drinking coffee, otherwise it will increase the burden on the stomach; moreover, only after drinking coffee for 40 minutes, caffeine will be absorbed by the body. Therefore, experts suggest that drink up
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The first instant coffee patent was born in the United States.
On August 11, 1903, a Japanese chemist living in Chicago obtained the first American patent for instant coffee. Instant coffee dissolved with water first appeared in England in 1771, but it is easy to deteriorate because of its short shelf life. Therefore, this kind of coffee exists for a short time and is quickly eliminated. In 1853, an American tried a kind of powdered coffee, but the same
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