Why is coffee refreshing? 2-4 cups a day are appropriate.

Coffee may make you sleepless at night, or it may raise your blood pressure.

But Professor Martin, director of the Coffee Research Institute at Vanderbilt University in the United States, said recently that coffee contains hundreds of healthy ingredients that can protect against liver damage, various cancers, asthma, heart disease and tremor paralysis.

2-4 cups a day are appropriate.

He pointed out that drinking 4 cups of coffee a day is beneficial. People who don't drink are more likely to suffer from these diseases than those who drink coffee. Nearly 20 years of research has confirmed that caffeine is an active ingredient in coffee, which can activate the central nervous system and can be used to make long-acting analgesics against drowsiness, colds, asthma and edema. The side effects are addictive insomnia, tension and elevated blood pressure.

Coffee contains anti-dementia substances

Studies have shown that coffee contains anti-dementia substances, which can reduce the effects of harmful substances on the body and help prevent some diseases. When oxygen in the body is mixed with other chemicals, it forms harmful substances that blindly damage cells and tissues, which is the cause of heart disease, vascular disease, tumors, declining immune mechanisms and neurasthenia, scientists say. Research by the American Coffee Institute shows that coffee contains four times more anti-dementia substances than tea. Nutrition plays a major role in strengthening the body's disease prevention mechanisms, and substances that fight dementia include vitamin E, vitamin C, carotene in soybeans, red wine, certain seasonings, fruits, onions and olives. Roasted coffee beans are more resistant to dementia, and the substance is not weakened or damaged in decaffeinated coffee. At the same time, experts point out that drinking a cup of coffee after getting up in the morning can awaken the brain, and a sip of coffee at work during the day can be refreshing.

Plain boiled water can be used at the same time

Therefore, the coffee can be a little stronger at this time. It is advisable to drink coffee slightly after dinner or in the evening. Coffee is recognized as a healthy drink, but drinking coffee should take a certain amount of time and should be timely and moderate. Coffee or tea is not suitable for drinking during meals, but should be drunk after meals. When drinking coffee, you should drink some boiled water, hot or cold. First, it can remove bad breath in order to have better taste; second, because coffee is beneficial to urine function, drinking more white water can increase urination and protect kidney function, and you don't have to worry about getting angry when drinking coffee.