Coffee is recognized as a healthy drink, but drinking coffee must be reasonable and scientific, which is beneficial to health, and it should be timely and moderate. A drink after getting up in the morning is for refreshing, and a drink at work during the day can refresh you. Coffee can be a little stronger at this time. It is best to drink coffee after meals or in the evening. Coffee or tea has a refreshing effect, but it is uncomfortable with meals, so it should be drunk after meals. Some friends like coffee very much, but they are afraid that they will get angry if they drink it often. We often see many people weak coffee. This way of drinking coffee is unhealthy. A cup of white water with coffee has two advantages: first, drink a mouthful of white water before drinking coffee to wash away the peculiar smell in your mouth. Second, because of the diuretic effect of coffee, drink more white water, increase urination and promote renal function. In this way, you can not only taste the delicious coffee, but also worry about getting angry. It's killing two birds with one stone.
Caffeine: Caffeine in coffee is insoluble in cold water but soluble in hot water. Caffeine can stimulate cerebral cortex, eliminate drowsiness, increase feelings and thinking, and can be used as a cardiotonic to regulate heart function. It also has the functions of dilating renal blood vessels and diuresis. However, it is not only coffee that contains caffeine. Usually a cup of coffee contains 60-65 milligrams of caffeine. However, if you consume too much caffeine, you are prone to tinnitus and myocardial hyperfunction (the heart beats faster and the pulse frequency increases). And the pulse is uneven, so be sure to drink coffee in moderation.