The advantages and disadvantages of drinking black coffee

Many people prefer to drink coffee. The refreshing effect of black coffee is more obvious, which can make people more focused and thus improve work efficiency. At the same time, it also has a good appetizer effect, promotes the free contraction of muscles, and can achieve the effect of weight loss. Although black coffee is good, you should not drink too much. Drinking too much can easily lead to palpitations, tinnitus, etc. If you have chronic diseases, you should drink less.

Benefits of drinking black coffee

1. Refreshing the mind Caffeine stimulates the central nervous system, which can make the mind clearer, improve thinking ability, focus attention, and improve work efficiency; 2. Strengthening the bones and muscles, benefiting the waist and knees Caffeine can make the muscles contract freely and improve motor function. 3. Appetite and digestion Caffeine stimulates the gastrointestinal tract to secrete gastric acid, which can promote intestinal peristalsis, help digestion, prevent gastroptosis, and also has a quick laxative effect. 4. Caffeine can promote kidney function, excrete excess sodium ions from the body, increase urine output, and improve abdominal distension and edema. 5. The linoleic acid contained in coffee can dissolve blood and prevent thrombosis, enhance vasoconstriction, relieve migraine and reduce the risk of stroke. 6. Soothes the lungs and relieves asthma: Caffeine can inhibit the parasympathetic nerves and reduce the onset of asthma. 7. Drying and deodorizing: Caffeine contains tannin, which has a strong ability to absorb odors. If your home has just been renovated, brew a pot of coffee indoors and the odor will be removed quickly. 8. Drinking coffee can protect your liver and relieve hangovers. 9. Coffee can help you lose weight. The best time to drink coffee to lose weight is within 30 minutes to 1 hour after lunch and before getting off work. Enjoy a cup of strong black coffee without sugar and walk to promote fat burning. 10. Black coffee can effectively improve low blood pressure. 11. Black coffee has antioxidant effects and helps prevent cancer and anti-aging.

harm:

1. Add caffeine when you are nervous to help improve alertness, sensitivity, memory and concentration. But drinking more coffee than you are accustomed to can have a similar effect as taking the same dose of stimulants and can cause jitteriness. For people prone to anxiety disorders, caffeine can make symptoms such as sweaty palms, palpitations, and tinnitus worse.

2. Aggravates high blood pressure. Because of its analgesic effect, caffeine is often combined with other simple analgesics. However, if you take large amounts of caffeine for a long time and if you already have high blood pressure, using large amounts of caffeine will only make your condition worse. Because caffeine alone can raise blood pressure, if it is combined with emotional stress, it will have a dangerous multiplying effect. Therefore, people at risk of high blood pressure should especially avoid drinking caffeinated beverages when they are under great work pressure. Some people who have the habit of drinking coffee all year round think that they are immune to the effects of caffeine. However, this is not the case. A study shows that after drinking a cup of coffee, blood pressure can rise for up to 12 hours.

3. Inducing osteoporosis Caffeine itself has a good diuretic effect. If you drink coffee for a long time and in large quantities, it will easily cause bone loss and have an adverse effect on the preservation of bone mass. For women, it may increase the threat of osteoporosis. But the prerequisite is that people who do not consume enough calcium in their daily food, or who do not exercise often, and women after menopause, lose calcium due to lack of estrogen. All of the above conditions, plus large amounts of caffeine, may pose a threat to bones. If you enjoy it in reasonable amounts, you can still avoid being discouraged.