The stronger the coffee, the more refreshing it is. The right way to cook is to choose the right method.

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After lunch, the sugar in the blood rises, making people drowsy. It's not enough to take a nap in the office for 10 minutes. It's better to replenish caffeine.

Coffee refreshing, mainly from the caffeine, can stimulate the central nervous system, release exciting messages, and then reduce the feeling of fatigue and anxiety, and improve the ability to think and learn. In addition, because caffeine can cause vasoconstriction, acting on the head can help relieve migraines.

But there is a dazzling array of coffee shops. If you want to achieve a refreshing effect quickly, what kind of coffee should you drink?

Many people think that the stronger the coffee, the higher the caffeine and the better the brain-waking effect, but in fact this is not the case. Huang Ming-teh, executive director of the Taipei Fine Coffee Business Development Association, points out that the thickness and the amount of moisture added when the coffee is brewed is related to the soaking time, but not directly related to the caffeine content. Caffeine extraction is affected by many factors, including the type of coffee beans, grinding particle size, brewing method, soaking time, temperature and so on, which will make a cup of coffee have different brain-awakening effects.

There are hundreds of ways to brew coffee, such as American coffee pot, siphon pot, mocha pot and so on. Among them, the caffeine content of each brewing method in the caf é of the University of Florida in the United States is found to be the highest. A cup of 230cc American brewed coffee has 115murafe 200mg caffeine, which is more than twice that of canned coffee sold in the market. Han Huaizong, the author of several coffee books, such as Fine Coffee, explains that because the American style takes as long as five murmurs and eight minutes, it dissolves the most caffeine.

As for the iced coffee that is often found in coffee shops, it contains relatively little caffeine. Many people intuitively think that if the coffee powder is soaked in water for more than an hour, the caffeine should dissolve the most. A study by Ye Jiasheng, an associate professor in the Department of Catering and Travel Management at Nantai University of Science and Technology, refutes this claim, pointing out that due to the low temperature of ice drop extraction of coffee, the caffeine content is the lowest of all brewing methods.

Caffeine intake, up to 300 mg a day

Although caffeine can be refreshing, consuming too much and constantly advancing your physical strength will make people too dependent on coffee and become more and more tired. once you stop drinking, you may also have withdrawal symptoms such as headache, tiredness, depression, irritability, nausea and vomiting.

Excessive caffeine intake affects health. According to the assessment of the EU Food Science expert Committee, it is best to limit caffeine intake to less than 300 mg per person per day, about 2 Murray and 3 cups of coffee.

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