What's the effect of drinking coffee? How about a cup of coffee every day? when is the best time to have coffee?

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In order to refresh themselves, many people choose to have a cup of coffee every day. However, in some cases it may be counterproductive! For the possible positive and negative effects of coffee, please see the following analysis from scientific journals and experts, such as Lifehacker and The New York Times.

Before important meetings, introverts should not drink coffee to propose proposals to clients and report to big bosses. In situations like psychological stress, time constraints, heated discussion or a higher level of discussion, assuming that you also drink coffee, the work efficiency of extroverts may increase, but the performance of introverts may decrease. Because caffeine stimulates the neocortical area of the brain, such stimulation is just right for extroverts, but it is easy for introverts to overdose, causing the brain to function slowly and fail to achieve the desired results. "Coffee fragrance" can also activate the brain. Japanese psychologist Yoshihiko Koga has conducted experiments on the effects of aroma on brain health, asking subjects to smell coffee powder, lemon oil and distilled water, and then measure their brainwaves. It was found that when the aroma of coffee was smelled, the number of alpha waves in the brain was the highest, showing a relaxed state, and the brain regions of cognitive function and information processing became more active. Because coffee aroma components contain trigonelline, which is also an alkaloid like caffeine, which can increase brain nerve activity, promote brain efficiency, and activate the hippocampal gyrus, which manages long-term memory areas, which is beneficial to improve the symptoms of forgetfulness and Alzheimer's disease. Drinking coffee can enhance sports performance Coffee is not only a good partner at work, but also a cup of American coffee before exercise, especially for marathons, cycling and other sports that require long endurance. First, caffeine promotes blood circulation, allowing muscles to quickly replenish oxygen; second, it relieves muscle pain, meaning that you can endure more intensive training after drinking coffee than when you don't drink coffee. The best time to drink is 1 Murray 1 before exercise. After five hours, the concentration of caffeine in the blood will reach its highest point. In addition, drinking a small amount of coffee after exercise also has a positive effect on athletes who have to train for a long time every day. During exercise, muscle cells quickly break down carbohydrates stored in muscles-liver sugar is glucose, which is used as an energy source for muscle contraction. The longer and stronger the exercise, the more liver sugar is consumed. The experiment confirmed that four hours after engaging in exercise that consumes a lot of liver sugar, subjects who consumed caffeine and carbohydrates increased the value of liver sugar by 66% compared with carbohydrates alone, showing the effect of caffeine.