Coffee is a drink made from coffee beans.

Due to different processing methods, it can be divided into refined coffee, instant coffee and decaffeinated coffee. Coffee contains only a small amount of nutrients. People drink coffee because it can refresh themselves, and this effect mainly comes from caffeine.

Caffeine is insoluble in cold water but soluble in hot water, which can excite the central nervous system, relieve fatigue and improve work efficiency. Usually a cup of 150 mL instant coffee contains 60? 65 milligrams.

A large number of medical studies show that coffee contains high concentration of caffeine, which will cause palpitations and arrhythmia and easily induce heart disease if it is drunk in large quantities for a long time. Therefore, drinking coffee must be timely and moderate.

(1) For the average person, drink no more than 4 cups of coffee every day. If you have symptoms such as irritability, anxiety, irritability, palpitation and nausea after drinking coffee, please don't drink caffeinated drinks that day.

(2) In order to protect health, it is suggested that each person should consume less than 6 mg/kg of body weight every day. For example, an adult of 50 kg can drink 150 mL of coffee every day. 3 cups, so that its daily caffeine intake does not exceed 300 mg. The daily caffeine intake of pregnant women should not exceed 4.

5 mg/kg body weight, children's daily caffeine intake should not exceed 2. 6 mg/kg body weight.

(3) For some special people, drink less coffee for various reasons. For example, pregnant women and lactating women, because caffeine will enter the fetus and baby through placenta and milk, it will lead to fetal malformation or abortion, and the baby's brain development will be damaged; Old people often drink coffee, which will accelerate the loss of calcium and cause osteoporosis; Drinking too much coffee in patients with cardiovascular diseases and stomach diseases will cause the recurrence or aggravation of cardiovascular diseases and stomach diseases.

2. What are the common sense or precautions for drinking coffee?

It is best to drink coffee after breakfast and lunch, because coffee can promote gastrointestinal peristalsis, help digestion, and decompose foods with high calories and fat, and will not cause a feeling of * * * to the stomach like drinking coffee on an empty stomach.

The water temperature for making coffee is preferably above 80 degrees, and the water temperature for tasting coffee is about 60 degrees.

In addition, people who want to lose weight with coffee must remember not to drink coffee with sugar and milk:)

Finally, a remedy is provided for sisters who also use coffee to lose weight, that is, coffee with Chili (preferably original Chili sauce). I heard that it works well after meals, but the taste is not very acceptable:)

The correct way to drink coffee

Coffee is different from other drinks. Therefore, the drinking method of coffee is as follows:

First of all, no matter what flavor of coffee you are brewing, don't speak in a hurry. Sit at the table and gently stir the coffee in the cup. Let its rich essence and fragrance fill your sense of smell. The feeling at this time is absolutely natural and pure. Take a sip of water and let the taste return to its original flavor. Take a sip, close your eyes and suck your nose. The richness from the heart is by no means ordinary.

Second, don't add too much candy. The purpose is to improve its bitter taste. Adding too much will change its original taste. Take a sip and compare the difference between pure taste and pure taste. Then take a second sip. I feel different every time. Of course, you have to combine your surroundings. The listener is from saxophone.

Third, take a sip of water, go back to nature, and then taste different feelings at different levels.

Fourth, according to personal preference, you can add a proper amount of sweet-scented osmanthus honey, which is rich and mellow, bitter, fragrant and sweet.

3. What is the common sense of drinking coffee?

1. Don't take too long to brew coffee, because brewing will carry some aromatic substances and gather on the surface of coffee, thus forming foam, and the aroma of coffee depends on the density of foam. When coffee is boiled, it will destroy the foam and make the aromatic substances run away with the steam.

2. Drinking coffee should not be too high. After drinking high-concentration coffee, the adrenaline in the body suddenly increases, which leads to the acceleration of heart rate, obvious increase of blood pressure, and abnormal phenomena such as tension, anxiety, tinnitus and involuntary trembling of limbs. In the long run, it will affect health.

It is not advisable to put too much polysaccharide in coffee. If you put too much sugar, people will be listless and even feel very tired after drinking it. This is because drinking coffee with too much sugar will make islet cells in the pancreas react and secrete a large number of islets, while excessive insulin will reduce the glucose content in the blood.

Once the blood sugar is too low, there will be symptoms of hypoglycemia such as palpitation, dizziness, weakness of limbs and lethargy. In addition, when drinking coffee, don't eat too many high-sugar foods such as cakes and sweets, otherwise the above phenomenon will also occur.

4. Precautions for drinking coffee

How to hold a coffee cup

Coffee after a meal is usually served in a small cup. The ears of this cup are so small that fingers can't pass through them. But even if you use a bigger cup, don't put your finger through the ear end of the cup. The correct way to hold a cup is to hold the handle with your thumb and forefinger, and then lift the cup.

How to add sugar to coffee

When adding sugar to coffee, you can scoop up the sugar with a coffee spoon and add it directly to the cup; You can also put the cube sugar near the coffee plate with a sugar clip first, and then add the cube sugar to the cup with a coffee spoon. If sugar cubes are put directly into the cup with a sugar clip or hands, sometimes coffee may spill, thus soiling clothes or tablecloths.

How to use a coffee spoon

The coffee spoon is specially used to stir coffee, so you should take it out when drinking coffee. Don't scoop coffee slowly with a coffee spoon, and don't mash the sugar cubes in the cup with a coffee spoon.

What if the coffee is too hot?

The freshly brewed coffee is too hot. You can gently stir it in the cup with a coffee spoon to let it cool, or wait until it cools naturally before drinking. It is very impolite to try to blow cold coffee through your mouth.

Use of cups and saucers

The cups and saucers for holding coffee are all specially made. They should be placed in front of or to the right of the drinker, and the cup ears should point to the right. When drinking coffee, you can hold the cup ear of coffee in your right hand, gently hold the coffee plate in your left hand, and slowly move it to your mouth to sip. Don't hold the cup full, gulp it down, and don't bow to the coffee cup. Don't make any noise when drinking coffee. When adding coffee, don't take the coffee cup away from the coffee plate.

Coffee and snacks

Sometimes you can have a snack with coffee, but don't take a coffee cup in one hand and a snack in the other, take a sip and drink it alternately. Put down the snacks when drinking coffee, and put down the coffee cup when eating snacks.

5. Precautions for drinking coffee

Benefits:

1. Coffee contains some nutrients. Nicotinic acid in coffee contains vitamin B, and roasted coffee beans have higher content. But also free fatty acids, caffeine, tannic acid and so on.

2. Coffee is good for the skin. Coffee can promote metabolic function, activate digestive organs and play a great role in constipation. Bathing with coffee powder is a kind of hyperthermia, which has the function of losing weight.

3. Coffee has the function of relieving alcoholism. Drinking coffee after drinking will quickly oxidize acetaldehyde converted by alcohol, decompose it into water and carbon dioxide and excrete it.

4. Coffee can relieve fatigue. To eliminate fatigue, we must supplement nutrition, rest and sleep, and promote metabolic functions, and coffee has these functions.

Three cups of coffee a day can prevent gallstones. For caffeinated coffee, it can shrink gallbladder and reduce cholesterol which is easy to form gallstones in bile. Recently, researchers at Harvard University found that men who drink two or three cups of coffee a day have a lower risk of gallstones than 40%.

6. Drinking coffee regularly can prevent radiation injury. Radiation hazards, especially electrical radiation, have become the prominent pollution at present. Baba's Indian atomic researchers reached this conclusion in mouse experiments and said it can be applied to humans.

7. The health function of coffee. Coffee has the functions of resisting oxidation, protecting the heart, strengthening bones and muscles, benefiting the waist and knees, stimulating appetite, promoting eating, reducing fat and digestion, inducing resuscitation and removing dampness, promoting blood circulation and removing blood stasis, calming wind and relieving spasm.

8. The influence of coffee on mood. Experiments show that the average person absorbs 300 mg (about 3 cups of brewed coffee) every day, which will have a good influence on a person's alertness and mood.

Disadvantages:

1. Make trouble when you are nervous.

Caffeine helps to improve alertness, sensitivity, memory and attention. But if you drink more coffee than you are used to, you will have the same dose of stimulants, which will cause tension. For people with anxiety tendency, caffeine can aggravate the symptoms of sweating, palpitation and tinnitus.

Aggravate hypertension

Caffeine is often combined with other simple painkillers because of its analgesic effect. However, if you take a lot of caffeine for a long time, if you already have high blood pressure, using a lot of caffeine will only make your situation worse. Because caffeine alone can raise blood pressure, if combined with emotional tension, it will have a dangerous multiplier effect. Therefore, people at risk of hypertension should especially avoid drinking caffeinated drinks when working pressure is high. Some people who drink coffee all the year round think they are immune to the effects of caffeine, but this is not the case. A study shows that after drinking a cup of coffee, the blood pressure can rise for as long as 12 hours.

3. Induced osteoporosis

Caffeine itself has a good diuretic effect. If you drink a lot of coffee for a long time, it will easily lead to bone loss, which will adversely affect the preservation of bone mass and may increase the threat of osteoporosis in women. However, the premise is that people who usually have insufficient calcium intake in food, or people who don't exercise often, and postmenopausal women, due to insufficient estrogen, calcium loss, coupled with a large amount of caffeine, may pose a threat to bones. If you can enjoy it in a reasonable amount, you can still do it without choking.

In addition, the following six kinds of people should not drink coffee:

Suffering from hypertension, coronary heart disease, arteriosclerosis and other diseases-drinking coffee for a long time or in large quantities can cause cardiovascular diseases.

Older women-coffee can reduce calcium and cause osteoporosis. After menopause, women need to supplement ten times as much calcium every day.

Patients with stomach trouble-drinking too much coffee will make stomach trouble worse.

Pregnant women-drinking too much coffee can lead to fetal malformation or miscarriage.

Vitamin B 1 deficiency-vitamin B 1 can keep the balance and stability of the nervous system, and coffee can destroy it.

Cancer patients-drinking too much coffee is dangerous for normal people.

6. What should I pay attention to when drinking coffee?

Many people know that drinking coffee has a refreshing effect, but what should we pay attention to when drinking coffee? Many people ignore this.

1, try not to use coffee partners.

Coffee partner smells good, but it's not good for your health. If you carefully observe its ingredient list, you will find that it contains "non-creamer", which is usually made of glucose syrup, hydrogenated vegetable oil and sodium caseinate, as well as three food additives: stabilizer, emulsifier and anti-caking agent. However, hydrogenated vegetable oil contains trans fatty acids, which is more dangerous than saturated fatty acids, which is recognized in the field of nutrition at present. Trans fatty acids have four major hazards: increasing blood viscosity and cohesion and promoting thrombosis; Increase low-density lipoprotein cholesterol (bad cholesterol), reduce high-density lipoprotein cholesterol (good cholesterol), and promote arteriosclerosis; Increase the incidence of type II diabetes and breast cancer; It affects the normal growth and development of infants and adolescents, and may have adverse effects on the development of the central nervous system.

If you are used to drinking coffee, try not to use a coffee partner. You can directly add hot whole milk and proper amount of sugar to coffee, which not only tastes as fragrant, but also has higher nutritional value.

2, coffee with sugar should be appropriate.

There are many reports that drinking coffee can help you lose weight, because caffeine in coffee can make people more excited, thus promoting the burning of calories and playing a role in losing weight. However, after trying the "coffee diet", many people find that they are not thin, but fat! In fact, this is because most people add a lot of coffee partners and sugar when drinking coffee, and both partners and sugar can bring a lot of energy, so the amount of calories that caffeine helps the body burn is somewhat insignificant. Therefore, in order to prevent excessive calorie intake, it is best to drink less sugar when drinking coffee.

Don't drink coffee when you are nervous.

If you drink coffee when you are nervous, it will often make things worse. Caffeine helps to improve alertness, sensitivity and memory, but drinking coffee when nervous can make people feel anxious and have negative effects. For people with anxiety tendency, caffeine can aggravate the symptoms of sweating, palpitation and tinnitus.

4, drinking coffee should not be excessive.

Drinking coffee in moderation can refresh you, but drinking more coffee than you are used to will make you too excited and even nervous. Therefore, although coffee is good for the human body, don't drink too much, and it is advisable not to drink more than 2 cups a day.

5. Patients with hypertension should not drink coffee.

Caffeine can excite people and raise blood pressure. However, patients with hypertension have high blood pressure. Under the effect of caffeine, if they are emotionally nervous again, the risk will rise sharply. Therefore, people who are at risk of hypertension should especially avoid drinking caffeinated drinks such as caffeine under the pressure of work. Some people who drink coffee all the year round think they are immune to the effects of caffeine, but this is not the case. A study shows that after drinking a cup of coffee, the blood pressure can rise for as long as 12 hours.

6, drink coffee to grasp the time.

It is best to drink coffee after breakfast and lunch, because coffee can promote gastrointestinal peristalsis, help digestion, and decompose foods with high calories and fat, and will not cause a feeling of * * * to the stomach like drinking coffee on an empty stomach. It is best not to drink coffee after dinner, so as not to affect sleep. If you want to stay up late by drinking coffee, you may unconsciously drink too much, which is not good for your health.

People who like to drink coffee must pay attention to drinking coffee in moderation, don't drink a few cups a day, don't drink too much, master the time of drinking coffee and drink coffee healthily.

7. Ask for knowledge about drinking coffee, such as what to avoid and what to drink before meals in the morning and evening.

Drink coffee in the morning

Generally speaking, it is best to drink coffee in the morning. Coffee can improve constipation, but this effect will be particularly significant in the morning and has little effect at other times. There are also many people who think that a cup of coffee in the morning will make them energetic when they go to work in the morning.

Drink coffee before and after meals.

Coffee can promote digestion. In order to give full play to this function, drinking coffee 30 minutes before meals or 30 minutes after meals is the most suitable time. However, because coffee will affect the body's absorption of iron, so that we can not absorb enough iron, especially anemia people should try to avoid it. In addition, drinking coffee 30 minutes before exercise can improve metabolism, help burn more calories and make exercise more effective.

Drink coffee when you are tired.

The refreshing function of coffee is universally acknowledged. 1 cup of coffee can keep us in a mental state for 4 hours, so drinking 1 cup after a nap can keep us awake, which is effective occasionally, but not for people who drink coffee for a long time.

Drink coffee in moderation at the right time.

Drinking coffee is not only a taste of fragrance, but also a pursuit of atmosphere. So many people like to visit cafes when they have nothing to do and enjoy the unique relaxed atmosphere of cafes. However, if you have a cup of coffee, you can't help but know the influence of coffee on human body. Drinking more and drinking less has a lot to do with health. Coffee, like any food, is beneficial to the human body as long as it is drunk in moderation.

For coffee with ordinary caffeine content, 200cc per cup, 2 cups per day (total caffeine content is about 150~250mg) is acceptable, and more than 2 cups may be in danger of exceeding the standard. Some studies even pointed out that if the caffeine intake exceeds 1 g within 1 day (equivalent to 8- 12 cups of ordinary coffee), it will lead to poisoning, palpitation, vomiting and fainting. If you take more than 1 0g in1day, you will be in danger of death!

Don't think that it is difficult for ordinary people to consume 1 g coffee within 1 day, because caffeine exists not only in coffee, but also in cola, tea or some refreshing drinks. Therefore, people who are addicted to this kind of drinks should be more careful! Besides "moderate" drinking coffee, "timely" drinking coffee is also very important. And drink a few more cups of coffee every day, the calories are amazing. Although coffee itself has no calories, its additives, such as sugar, milk, whipped cream, cinnamon powder, chocolate and so on. Can make you gain weight quickly.

Precautions for drinking coffee

1, coffee with sugar should be appropriate.

There are many reports that drinking coffee can help you lose weight, because caffeine in coffee can make people more excited, thus promoting the burning of calories and playing a role in losing weight. However, after trying the "coffee diet", many people find that they are not thin, but fat! In fact, this is because most people add a lot of coffee partners and sugar when drinking coffee, and both partners and sugar can bring a lot of energy, so the amount of calories that caffeine helps the body burn is somewhat insignificant. Therefore, in order to prevent excessive calorie intake, it is best to drink less sugar when drinking coffee.

Don't drink coffee when you are nervous.

If you drink coffee when you are nervous, it will often make things worse. Caffeine helps to improve alertness, sensitivity and memory, but drinking coffee when nervous can make people feel anxious and have negative effects. For people with anxiety tendency, caffeine can aggravate the symptoms of sweating, palpitation and tinnitus.

3, drinking coffee should not be excessive.

Drinking coffee in moderation can refresh you, but drinking more coffee than you are used to will make you too excited and even nervous. Therefore, although coffee is good for the human body, don't drink too much, and it is advisable not to drink more than 2 cups a day.