More and more people in China like to drink coffee, because coffee really has a more efficient refreshing and exciting effect. For many young overtime workers, it is both practical and attractive. In addition, with the further infiltration of western culture, many young people follow the fashion, taking drinking coffee as the fashion, cafes and coffee bars are constantly emerging, and business is getting better and better, which conflicts with the traditional tea drinking culture in China. The business of many tea bars is bleak and unsustainable.

Coffee contains certain nutrients, especially vitamin B, as well as free fatty acids, caffeine and tannic acid, which can stimulate gallbladder contraction and reduce bile accumulation to form gallstones. Coffee in coffee can improve the excitability of the central nervous system. After drinking, the spirit will become excited, relieve drowsiness, concentrate, and improve the efficiency of study and work. Caffeine can accelerate metabolism, improve glomerular filtration rate, promote the discharge of excess water in the body, and have the effect of detumescence. After the metabolism is accelerated, the decomposition rate of alcohol in the body will also become faster, so drinking coffee can also relieve alcoholism.

Coffee is not for everyone. People with hypertension, coronary heart disease, arteriosclerosis and other diseases will cause cardiovascular diseases if they drink coffee for a long time. Drinking coffee in the elderly will reduce the absorption of calcium and cause osteoporosis. After menopause, women need to supplement ten times as much calcium every day. Drinking too much coffee in pregnant women can lead to fetal malformation or miscarriage. Excessive consumption of coffee by patients with stomach diseases will lead to the deterioration of stomach diseases. Diabetes patients drink coffee, because coffee in coffee can reduce insulin secretion of pancreas, reduce glucose tolerance, increase insulin secretion and raise blood sugar. Insomnia patients drinking coffee will affect the sedative effect, increase the number of waking up, and make the quality of sleep worse.

The traditional tea drinking culture in China has a long history and rich connotations. Catechins and their oxidative condensates in tea can slow down and maintain the caffeine excitement in tea, and play a refreshing role. Drinking tea often can keep people awake. Tea contains a lot of catechins, which is a unique component of tea. It has antioxidant effect, can also reduce the cholesterol content in blood, prevent blood pressure from rising, and inhibit platelet aggregation. Suitable for patients with hypertension. Tea contains caffeine and theophylline, which can directly act on the heart, excite the heart, dilate coronary artery, increase blood input to the heart and improve heart function. People in China are more suitable for drinking tea.