Is it good to drink coffee or tea to excite the brain when you are sleepy?

Pros and Cons of Drinking Coffee:

The main stimulant contained in coffee is caffeine. In addition, it contains fats and minerals such as magnesium, potassium, and copper, as well as B vitamins, aromas, and toxins. That said, coffee doesn't have any nutritional value, but it has many pros and cons on the body due to the effects of caffeine.

1.Beneficial effects of drinking coffee on the body:

For the nervous system: Caffeine has the effect of stimulating the brain, can eliminate the feeling of laziness, make people feel relaxed and happy, can make people concentrate, think quickly and evoke memory. Caffeine has been shown to speed up calculations and computers, and can make car drivers move quickly.

But there is no scientific evidence to prove that caffeine has an effect on improving the quality of work.

For cardiovascular: Drinking coffee can increase the heartbeat, increase blood pressure, promote blood circulation, and enhance myocardial contraction.

For the urinary system: caffeine can dilate the blood vessels of the kidneys and increase the blood flow of the glomeruli, thus increasing the water penetration and detoxification function of the kidneys, which can be said to have a diuretic effect.

For the respiratory system: Caffeine relaxes the smooth muscles around the trachea, which dilates the trachea and increases the volume of breathing. However, caffeine should not be used as a drug for clinical ** asthma.

2.Effects of Coffee Drinking on Physical Ills:

Drinking a lot of coffee can affect appetite and may cause vomiting and cramps, as well as gastritis and a thick tongue coating, which can make the body feel tired and weak.

Drinking a lot of coffee increases urine output, harms the bladder, and may cause urinary tract infections.

Too much caffeine in the body has a negative effect on the nervous system, causing insomnia, shaking hands, and slurred speech.

The latest research shows that when breastfeeding women drink coffee, caffeine can enter the child's body with the milk, making the child irritable and unable to sleep.

Coffee is a risk factor for those with heart disease and high blood pressure. Studies done in the United States have shown that drinking coffee can worsen heart disease and high blood pressure. The daily intake of caffeine must be controlled within 200 mg, that is, no more than 3 cups of coffee per day.

Coffee should never be given to children, and you are advised not to give coffee to teenagers under the age of 15. Try not to drink coffee or drink less coffee after the age of 40. The latest animal experiments suggest that caffeine may be a carcinogenic factor.

Breastfeeding women should not drink coffee.

Being sleepy indicates that the body is starting to get tired and must rest, and using coffee and tea to force the brain to move is definitely harmful to the body.

Researchers from Harvard Medical School in the United States reported in the new issue of the International Journal of Cancer that people who drink coffee and tea regularly have a lower risk of kidney cancer.

The researchers combined 13 previous long-term studies on the health effects of various foods and found that regular consumption of coffee and tea reduced the risk of kidney cancer, compared with drinking milk, soft drinks or fruit juices.

The 13 long-term studies involved a total of about 530,000 women and 240,000 men. The researchers found that people who drank more than 3 cups of coffee a day had a 16% lower risk of kidney cancer compared to people who drank less than one cup of coffee a day on average (who also did not drink tea); And those who drank only one cup of tea a day (about 230 grams) had a 15% lower risk of kidney cancer than those who did not drink tea (and did not drink coffee).

The researchers pointed out that although it is not directly proven that drinking coffee and tea prevents kidney cancer, some evidence can still be found by analyzing the composition of coffee and tea. For example, coffee and tea are rich in antioxidants, which may help protect kidney cells from damage. In addition, certain ingredients in coffee and tea can enhance the body's sensitivity to insulin and improve kidney function, which may have a preventive effect on kidney cancer over time.

Because coffee contains caffeine, drinking coffee causes the brain to release dopamine, which can make us excited; It may be that it is too late to drink, and the brain has already released signals of exhaustion.

The caffeine in coffee sugar can have a refreshing effect. Drinking some coffee in moderation is good for the body and can make the nervous system more active.

When you are tired, the more you drink coffee, the more you get a headache? Have you been tricked? Coffee isn't for everyone.

Coffee color can be commissioned, but some people have a strong resistance to coffee.

Maybe it's because of a person's physique, but caffeine can really make people feel refreshed.

Coffee can be refreshing, but drinking too much coffee will naturally produce immunity.

For some people to say that drinking coffee is refreshing, but some people are sleepy, it all varies from person to person.

Drinking coffee regularly will make the body adapt, after the central nervous system is in a state of excitement for a long time, drinking coffee has no effect, and in fact, instant coffee is not refreshing, but helps sleep.

There are many types of coffee, and people have different physiques, so there is no way to generalize.

Because there is a lot of coffee that does not have a refreshing effect on its own, and if you drink too much coffee, it will have no effect.

I haven't really heard of that, but as far as I'm concerned, drinking coffee definitely won't work.

I think this kind of thing should be different from person to person.

Because some people have weak digestion and are intolerant to coffee, they are sleepy when they drink coffee, which is how it occurs.

For people who are allergic to coffee, after drinking coffee, the metabolism will be accelerated, and the metabolism needs to consume vitamin B. At this time, it will increase the consumption of B vitamins related to nerve and muscle coordination in the human body, and when the human body has enough vitamin B, coffee has a refreshing effect; On the contrary, when vitamin B is lacking, drinking coffee makes you want to sleep more.

This is because everyone's physical fitness is different, so the reaction after drinking coffee is different.

The refreshing foods are as follows:

1. Sweet potato: Sweet potato contains vitamin B, vitamin E, -carotene, B vitamins are essential nutrients for nerve growth and development. Vitamin E has a good antioxidant and anti-fatigue effect, -carotene has the ability to delay the decline of mental power caused by age, and helps to maintain the sharp thinking ability of office workers;

2. Deep-sea fish: more than 60% of brain cells are composed of unsaturated fatty acids, and the most important thing is DHA, which is an important component of brain cells and plays an important role in the conduction of neurons and the formation of synapses. It plays an important role in enhancing brain intelligence, memory and concentration, and DHA is rich in deep-sea fish.

3. Lean meat: Lean meat contains vitamin B, vitamin E, iron, phosphorus, iron is an important component of hemoglobin, hemoglobin is responsible for transporting and exchanging gases in the human body, so eating more lean meat is of great significance for maintaining the vitality of the brain.

Drink plenty of water, eat more magnesium-rich foods, eat more oatmeal, eat more cereals, eat more protein foods such as eggs and lean meat, eat more bananas, drink more nonfat yogurt, eat more spinach, eat more strawberries, eat more tuna, eat more cereal, eat more black beans or soybeans.

Tea, sweet potato, soybeans, kelp, seaweed, radish, sesame oil, vinegar, brown sugar. These foods are refreshing.

Bitter melon, spinach, bananas, strawberries, tuna, cereal, nonfat yogurt, energy bars and more.

Ingredients include nuts and seeds, as well as a variety of beets, spinach, minerals, sugar, ginger, cereals.

Introduction: Coffee is a very common drink, and tea is the same as people think that it can be refreshing after drinking coffee, so drinking coffee really helps to refresh the mind, why some people don't feel it?

The refreshing substance in coffee is mainly caffeine, which has a positive effect on the human body, and after drinking, it will increase the blood flow speed and the heart rate faster, so as to achieve the effect of awakening the brain. Therefore, coffee is helpful to refresh the mind, but everyone's sensitivity to caffeine is different, people with high sensitivity will feel very excited even if they drink a little coffee, but people with low sensitivity no matter how much they drink coffee, there is no corresponding effect. Therefore, if you don't feel refreshed, it means that your sensitivity to caffeine is not high, so no matter how much black coffee you drink, or even drink black coffee before going to bed, there will be no change, which means that you have no way to refresh yourself by drinking coffee, and you can only choose other ways in this case.

For those who are sensitive to caffeine, it is necessary to pay attention to the time when they drink coffee, and avoid drinking coffee a few hours before bedtime, which will affect their sleep quality, and they should make corresponding choices according to their physical fitness.

In fact, many people hope that their work and thinking can be better, so that they can help themselves achieve the desired success. Of course, if you can't become more efficient by drinking coffee, you can also keep your body in a more efficient state for a long time through exercise and regular work and rest. And when people sit for a long time and think about a thing, their thinking ability will indeed decline, and they can communicate with others or do some anaerobic exercise, so that they can effectively improve their thinking, improve their spirit, and thus improve their life efficiency.

At the same time, you should also close your eyes properly in daily life, and when your brain gets enough rest, you can work more efficiently.

Yes, drinking coffee does make you feel refreshed. You don't feel it, maybe it's because you're not drinking a lot of coffee, or it's because the coffee you're drinking isn't pure.

Drinking coffee really helps to refresh your mind, and if you don't feel a noticeable effect, it's a sign that your constitution isn't very sensitive to caffeine.

Yes, it can be refreshing and refreshing. Maybe I drink coffee a lot in my life, and I have numbed myself, so I can't feel it.

We all know the role of coffee, drinking a refreshment is his signature effect, so why do some people drink it but get sleepy, let's first explain how caffeine works.

1.Why does caffeine refresh you?

Let's have a fun explanation haha).

We have an adenosine receptor in our brain that binds to adenosine, and when we feel sleepy, it's because it binds to adenosine.

And when caffeine, a third party, appears, it will overly prey adenosine receptors, so that adenosine cannot bind to it, and at this time, you will be excited.

Ahem: So that's how coffee picks us up, so the question is, why do we get sleepier the more we drink?

1.When we are sleepy, adenosine and adenosine receptors are in love, and it is not so easy for caffeine to have an effect.

2.We may drink coffee with a relatively low caffeine content, and more sugar, such as latte, cappuccino, you must know that when people absorb a lot of sugar, when the sugar is consumed and decomposed, our blood sugar content will rise a lot, we are easy to get sleepy, of course, how does the sugar amount of this coffee affect the body, we have no experimental data to prove that it is rushed.

So when you are tired, it is better to drink black coffee, mocha coffee and other coffees with higher caffeine content.

So what is the correct coffee drinking posture?

Drink coffee, set a 20-minute alarm, get some sleep or close your eyes.

The adenosine from the receptors is cleared at rest, and the caffeine is absorbed and binds to the receptors.

You don't have time to sleep? It doesn't matter, then drink coffee with higher caffeine, and I'm sure you'll be beaten after a while.

Of course, if you are caffeine-sensitive, I believe that a simple cup of coffee can get you excited for a long time.

I must have eaten some greasy food, or I was very full, and then when my body was very cold, I would feel more and more sleepy after drinking hot coffee.

The concentration is relatively low, and drinking some instant coffee often will lead to more and more sleepiness after drinking, and there is no good effect.

It may be related to your body's metabolism, and it may be related to the central nervous system. It may be related to the body's hormones.