Is it reliable to drink coffee to lose weight? Drink coffee correctly

Drinking coffee can easily cause insomnia.

Because of the caffeine in coffee, caffeine doesn't actually relieve fatigue, it just doesn't make the brain feel tired. When people feel tired because of exercise or mental work, adenosine gradually accumulates in the brain as a product of energy metabolism, making people feel tired. If you drink coffee at this time, then caffeine will replace adenosine in the brain attached to the adenosine receptor, so that people do not feel tired, thus preventing drowsiness. But for some people who are sensitive to caffeine, caffeine may excite the nerve center and keep the sympathetic nerve excited all the time. When the parasympathetic nerve is unable to activate and exert its function, it is difficult for people to enter the sleep state, thus causing insomnia. For people who are sensitive to caffeine, it is no longer appropriate to drink coffee in the afternoon, nor should they drink drinks containing caffeine such as tea.

Drink coffee and watch out for dehydration

In addition to stimulating the nerves, caffeine also has a powerful diuretic function. After drinking coffee, people will feel like they have drunk and run to the toilet as frequently. This is actually the result of caffeine's diuretic function. When people urinate frequently and can not fully replenish water, people are easy to be dehydrated, and all kinds of symptoms caused by lack of water in the body should be paid enough attention. When drinking coffee, you should pay attention to replenishing plain boiled water, and you can also judge whether you are short of water by observing the color of your urine. If the urine is dark yellow, it means that the human body is in a state of dehydration. It is not appropriate to continue drinking coffee at this time. You should replenish plain boiled water. In addition, it should be noted that caffeine stimulates excessive secretion of gastric acid, so people with excessive stomach acid should drink less coffee and be more careful not to drink coffee on an empty stomach.

Drinking coffee is prone to palpitations and should avoid drinking coffee.

Due to the medical effect of caffeine, if the concentration of caffeine in the blood rises sharply, it may stimulate the central nervous system, causing dizziness, rapid heartbeat, excitement, restlessness and other mental symptoms. If the concentration of caffeine in the blood exceeds 40 micrograms / ml, no matter who may have arrhythmias, spasms and other symptoms. It has been reported that women who drink six or more cups of coffee a day have a 2.5 times higher risk of myocardial infarction; in areas where coffee is consumed more in Finland, mortality is also higher, but a large number of prospective studies do not prove that coffee is an independent cause of death from coronary heart disease. Although some people have a slight increase in blood pressure an hour after taking 250mg caffeine, a large number of studies have not found any relationship between coffee consumption and blood pressure. Caffeine can shorten the effective refractory period of atrioventricular node, resulting in a variety of rapid arrhythmias and early beats. Paroxysmal atrial tachycardia occurred in 1 case after taking coffee. In other words, for some people who are sensitive to caffeine, there is a link between caffeine intake and heart health, such as women who reported sudden death from drinking coffee, or because they are sensitive to caffeine. causes symptoms such as palpitations, palpitations, dizziness, and may even cause sudden cardiac death. Therefore, if you drink coffee after palpitations, palpitations, dizziness, etc., caffeine intake should be reduced or avoided.