Looking at coffee from the perspective of traditional Chinese medicine: coffee beans come from the fruit of coffee trees, which are red in color, belong to fire, enter the heart, and are bitter in gas, and flow into the large intestine. Sweet and bitter in nature, dry and burnt. Sweet and mellow taste can nourish and relieve pain, while spicy taste can disperse and promote qi circulation. It can pass through the brain-blood barrier, treat exterior wind-heat, headache and bitter taste, have the function of drying dampness and stopping diarrhea, and can treat heat or dampness. The main components of coffee beans: coffee beans are rich in vitamin B, free fatty acids, caffeine, tannic acid, linoleic acid, a certain amount of unsaturated fatty acids, purine components and antioxidants, and roasted coffee beans have a high content; Caffeine, as the main component of coffee, can stimulate the central nervous system of human brain and is the main component of various painkillers, diet pills and stimulants. 1。 Refreshing caffeine has strong stimulation and fragrant smell, which can easily pass through the brain-blood barrier, stimulate the central meridians, promote brain activity, make the brain more sober, lively and sensitive, have abundant thinking ability, concentrate and improve work efficiency; It can stimulate cerebral cortex, promote feeling, judgment and enhance memory ability. 2。 Strong bones and muscles, waist and knees. Caffeine can make muscles contract freely, increase tendon strength, reduce exercise valves, increase body sensitivity and improve motor function. 3。 Appetizing staple food. Caffeine can stimulate sympathetic nerve, stimulate gastric acid secretion in gastrointestinal tract, promote digestion, prevent bloating and gastroptosis, and promote gastrointestinal hormones and peristalsis hormones, thus quickly relieving constipation. 4。 Reduce fat and food accumulation. Caffeine can accelerate the decomposition of fat, improve the metabolic rate of the body, increase the consumption of heat energy, and help to reduce fat and tighten the skin. In addition, bathing with coffee powder is an excellent hyperthermia and helps to lose weight. 5。 Get rid of dampness. Caffeine can promote renal function, expel excess sodium ions from the body, increase urine output, improve abdominal distension and edema, and help to lose weight. 6。 Promoting blood circulation and removing blood stasis. Linoleic acid contained in coffee can hemolyze and prevent thrombosis, enhance vasoconstriction, promote blood circulation and relieve headache caused by vasodilation, especially migraine. In addition, it can promote venous return, moisturize skin, restore muscle surface elasticity and prevent cardiovascular diseases. 7。 Relieve wind and relieve spasm. Coffee can accelerate cholesterol metabolism, reduce coronary atherosclerosis and reduce the probability of stroke. 8。 Joy: Drinking coffee with proper color can make people feel excited and happy, put aside troubles and melancholy, relieve stress and relax. 9。 Caffeine used for pulmonary asthma can promote sympathetic nerve, inhibit parasympathetic nerve, and prevent parasympathetic nerve from being excited and causing asthma. 10。 Damp-drying and deodorizing caffeine contains tannin, which can deodorize and eliminate garlic and meat flavor. 1 1, coffee has a hangover effect. Drinking coffee after drinking will quickly oxidize acetaldehyde converted from alcohol, and part of it will be decomposed into water and carbon dioxide and excreted. 12, three cups of coffee a day can prevent gallstones. For caffeinated coffee, it can stimulate gallbladder contraction and reduce cholesterol which is easy to form gallstones in bile. Recently, researchers at Harvard University found that men who drink two or three cups of coffee a day have a lower risk of gallstones than 40%. 13. Drinking coffee often can prevent radiation damage. Radiation hazards, especially electrical radiation, have become the prominent pollution at present. This conclusion was reached by the atomic researchers in Barba, India, in the mouse experiment, and it was proved that it can be applied to humans. 14, foreign reports point out that the probability of dry eye syndrome in coffee drinkers is significantly lower than that in non-coffee drinkers. This is mainly related to the purine component in coffee (the purine component in eye drops can stimulate glands to secrete fluid, thus protecting eyes). This is of course good news for computer people who love coffee. 15 can relieve pain, such as headache caused by a bad night's sleep, or pain caused by vasoconstriction on one side of the temple. These non-organic factors can be alleviated by coffee. It is recommended to drink it in the morning or at noon. 16, color (dark) and bitterness are the results of rich antioxidant substances in coffee; In recent years, all foods with antioxidant function are very popular in the market. It is well known that vegetables and fruits are rich in vitamins A, C and B, and tea, which is quite popular in Japan, is regarded as healthy food because they are rich in antioxidants. A Japanese research report pointed out that coffee contains four times as many antioxidants as tea, which can resist the harm of free radicals (note: metabolic waste of human cells) to the human body and combat cardiovascular diseases. 17, the report of the coffee research institute of Vanderbilt University in the United States pointed out: "Coffee contains many ingredients beneficial to human health. According to preliminary research, moderate drinking of coffee can prevent and treat diseases such as liver cirrhosis, certain types of cancer, bronchitis, asthma, heart disease and Parkinson's disease. Moderation means drinking 2 to 4 cups of coffee a day. " "Instant coffee" is not generally accepted coffee in the traditional coffee industry. Instant coffee is an industrialized synthetic product. In some specific cases, such as long-distance travel, it is a good coffee substitute on trains and planes, and it is not the original coffee. Because in the enjoyment of traditional coffee, the grinding, boiling and filtering of coffee beans, as well as the choice of utensils and different blending methods are all very particular. In the process of synthesis, the original nutritional and health components of instant coffee were destroyed and disappeared. Although it tastes like coffee when you drink it, it loses its rich nutrition and health care functions, as well as its heavy cultural taste and atmosphere. In addition, preservatives, pigments, sweeteners and other additives contained in instant coffee can not be digested and absorbed in human body, and are constantly deposited, causing harm to the central nervous system of human body and accelerating cell aging of human body. Therefore, natural health is the most important. On the other hand, most people are experienced, and sometimes they need to drink coffee to boost their spirits, especially when they are sleepy in a meeting at three or four o'clock in the afternoon, or when they get up at five o'clock in the morning to catch a report, a cup of hot coffee wakes up immediately. Caffeine is the most widely used substance in the world, which has psychological or spiritual influence. The world consumes120,000 tons of caffeine every year, which is equivalent to 6 billion people drinking a caffeinated drink every day. However, drinking these things in large quantities for a long time will also have side effects. Modern people had better know more about when to drink, how to drink and how much to drink. A cup of coffee usually contains 100 mg of caffeine; Tea has less caffeine, about 50 mg. After caffeine enters the human body, it is immediately absorbed by the blood in the digestive tract, promoting the metabolism of 10% and accelerating the burning of calories in the body. Women metabolize coffee 20% to 30% faster than men, so some people think that coffee is helpful to lose weight. It will also slightly stimulate our central nervous system. In fact, some studies have found that caffeine sharpens the mind, which is beneficial to tasks that require quick response, such as finding a letter you want among a lot of letters, but not to tasks that require precise thinking. And the dosage is different. If you drink less, you won't be able to sober up; If you drink too much, you will become happy, understand life and lack problem consciousness. Caffeine is not addictive, but it will become a habit, and people who drink coffee often have to increase the dose to refresh themselves. And if you suddenly give up drinking, some people will have headaches, listlessness and want to sleep.