-can coffee refresh you?-Why can't some people refresh themselves by drinking coffee?
How can some people refresh themselves by drinking coffee while others still feel sleepy? There are three factors that cause coffee to have different effects on people: age, genes and habits:
1. Age factor:
With age, there are fewer and fewer receptors in the brain that can dock with caffeine. The number of receptors in the brain of a 60-year-old is less than 1/3 of that of a 20-year-old-so coffee tends to have less effect on the elderly.
two。 Genetic factors:
Everyone has different receptors in the brain because of their genes. Some people's brains are better able to accept caffeine-coffee has a particularly significant effect on these people.
3. Habitual factors:
If you drink a lot of coffee over a long period of time, the brain will release fewer and fewer receptors-coffee will have less and less effect because of habit, which is similar to producing immunity.
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15 Health-preserving functions of Coffee from the Perspective of traditional Chinese Medicine
1. Refreshing and refreshing caffeine has a spicy flavor, which can easily pass through the brain-blood barrier, stimulate the central sutra, promote brain activity, make the mind more clear, respond lively and sensitive, think fully, concentrate, and improve work efficiency; it can stimulate the cerebral cortex, promote sensation, judgment and enhance memory. 2. strong muscles and bones, waist and knee caffeine can make muscles contract and increase freely.
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This is the reason why the second brewed coffee is not good.
Coffee cooked beans are composed of soluble aromatic substances (about 30%) and wood fibers (about 70%), but not all of them are best when extracting aromatic substances. In general, coffee with an extraction rate of 18% to 22% will taste better. If you find it difficult to understand, let's take sugarcane as an example: sugarcane is made up of water, sugar, minerals, vitamins, amino acids and other nutrients.
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