There are many benefits. 1. Drinking black tea to prevent influenza: In winter, the physiological function of human body decreases, and the yang is weakened, which requires higher energy and nutrition. Black tea is rich in protein and sugar, which can generate heat and warm the abdomen, enhance the cold resistance of human body, and also help digestion and greasy. Flavonoids contained in black tea have strong bactericidal and anti-inflammatory effects, which make the influenza virus lose its infectivity and have positive effects on preventing colds. 2. Nourishing the stomach: black tea is processed by fermentation, and tea polyphenols undergo enzymatic oxidation under the action of oxidase, which reduces the content and reduces the irritation to the stomach. In addition, the oxidation products of these tea polyphenols can also promote human digestion, so black tea will not only hurt the stomach, but also nourish the stomach. Drinking black tea with sugar and milk regularly can diminish inflammation and protect gastric mucosa, and also has certain effect on treating gastric ulcer. Black tea has the effects of clearing away heat, promoting fluid production, promoting diuresis, reducing swelling and eliminating fatigue. It mainly promotes metabolism, and some components in it can promote sodium and water excretion, so that human metabolism can be accelerated and toxins can be discharged quickly. Stroke and heart disease are high incidence periods in winter. Black tea can also reduce strokes and heart attacks. Therefore, in winter, the elderly drink warm black tea every day, which not only warms their bodies, but also plays a role in preventing and treating diseases. In addition, gargling with black tea often can remove bacteria in the mouth and prevent influenza. Black tea can also prevent osteoporosis and reduce the effect of skin cancer. But pay attention to drinking black tea, and you must drink it hot. No cold drinks. The newer the black tea, the better. Improper drinking can easily hurt the stomach, because the fresh tea just picked has a short storage time and contains more unoxidized polyphenols, aldehydes and alcohols, which is easy to stimulate the gastrointestinal mucosa and induce stomach diseases for patients with poor gastrointestinal function and chronic gastrointestinal inflammation. The suggestion is that if it is too late, you'd better not drink it. If you drink it, it will also affect your sleep. Although it can refresh you, it will affect your sleep if the time is not right. When drinking tea, it is best to simply drink and experience the aroma and taste of tea; But drinking tea, chatting and eating snacks with friends is also a way of entertainment and leisure. Black tea has another advantage, that is, it is mild and compatible, so milk, roses, honey and so on can be added.