Caffeine can excite the heart muscle. After drinking coffee, people who are sensitive to caffeine will lead to a sharp rise in the concentration of caffeine in the blood, which will stimulate the central nervous system and cause mental symptoms such as dizziness, rapid heartbeat, excitement and anxiety. Caffeine can shorten the effective refractory period of atrioventricular node, thus causing various tachyarrhythmias and premature beats.
Therefore, if you feel flustered, flustered and dizzy after drinking coffee, you should reduce or avoid caffeine intake. People in sub-health state, people who often stay up late should not drink a lot of coffee for a long time, and patients with hypertension and heart disease should not drink coffee.
Drinking coffee on an empty stomach can reduce weight because after a night's rest, when drinking coffee on an empty stomach in the morning, caffeine will stimulate the stomach, affect the normal nutrient absorption of breakfast, and eventually lead to weight loss. However, this is a very unhealthy practice, especially for people with gastric ulcer and heartburn symptoms. Drink less coffee or try not to drink coffee, otherwise it will aggravate gastrointestinal discomfort.
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Precautions for drinking coffee:
1, don't drink coffee when smoking. Because caffeine in coffee reacts with nicotine in cigarettes, it is easy to cause changes in some cells and induce cancer.
2, calcium deficiency can not drink coffee. Every cup of coffee will damage about 8 milligrams of calcium in our body, so people who lack calcium had better not drink coffee.
Don't drink coffee at night. Because coffee has a strong refreshing effect, if we drink coffee at night, it will easily lead to insomnia.
4. Don't drink coffee on an empty stomach. Drinking coffee on an empty stomach is more likely to cause "stomach gas damage", which will affect the digestion and absorption of stomach function and lead to gastric ulcer in severe cases.
5, drink coffee time to master. Coffee usually takes effect about an hour after drinking, but it can last for 4-5 hours. If you want to be energetic all day, you should drink coffee at 9 ~ 10 in the morning or at 2 or 3 pm.
6. Don't drink too much coffee. Drinking coffee in moderation can refresh you, but drinking more coffee than you are used to will make you too excited and even nervous.
People's network-precautions for drinking coffee.
People's Network-Attention! Coffee is healthier to drink like this.
People's Daily Online-Experts remind: Don't drink coffee at these moments.
People's Daily Online-Heart palpitations caused by women staying up late drinking espresso. Pay attention to six points when drinking coffee.