How to drink coffee scientifically? Basic knowledge of coffee

Coffee, as a representative of fashion and delicacy, has been favored by countless fashionable beauties. However, drinking coffee without paying attention to time will cause harm to people's body.

Coffee contains caffeine, after entering the body will promote sympathetic excitation, thus eliminating drowsiness, improve blood circulation, the body also feels warm, do not feel tired, so coffee has a "refreshing" effect.

But sympathetic nerve is stimulated, excited, have negative effect to appetite however, namely appetite can reduce. So drinking coffee before dinner can make you feel less like eating. In addition, because the stomach is stimulated and gastric juice secretion increases, stimulation empty stomach, gastric ulcer and other patients unfavorable. This can be said to be a negative effect of coffee. However, drinking after meals, because gastric secretion will increase, so it is helpful for digestion. Therefore, there is absolutely no problem drinking coffee after meals.

In addition, some people think that adding milk to drink can alleviate its stimulating effect, but how much can a small amount of milk neutralize caffeine, unless it is half milk and half coffee, mixed into coffee milk or milk coffee, which may have a neutralizing effect. For example, coffee milk drunk at breakfast, because milk is more than coffee, although empty stomach drinking, still have the effect of easing gastric juice.

Ideally, coffee should be drunk after a meal, which is beneficial and harmless. One of the benefits is preventing allergy attacks. Asthma or allergic rhinitis is caused by the excitation of parasympathetic nerves in the allergic system. If it can stimulate sympathetic nerves and inhibit parasympathetic nerves, it will help prevent attacks. Especially severe allergy patients, some minor incentives can cause physical discomfort, coupled with psychological fear of allergies, often out of control. Therefore, it is recommended to take advantage of the advantages of caffeine, in allergies, asthma is about to attack (the patient himself feels) drink a cup of coffee in advance, quite preventive effect. In addition to the stimulant effect of caffeine, patients have a psychological sense of security that they have "already drunk coffee" and are less likely to attack.

Of course, the so-called "too much is not enough", no matter how good things, but also "enough". Otherwise, regardless of drinking coffee before and after meals, excessive caffeine will cause palpitations (heart beats very badly), even trance, unstable walking center of gravity and other side effects.

In principle, coffee to two to three cups a day is appropriate, such as drinking four or five cups, most people will feel sick, so please coffee beauty must be careful.