Correction pens can harm the human body

Students use a lot of correction pens.

They occassionally use correction pens to correct the wrong letters when they are taking exams or doing their homework.

These pens contain substances harmful to the human body, such as benzene, ethane, etc.

When you open the correction pen lid, it emits a stimulating smell similar to that of gasoline, which also contains harmful substances in the human body.

According to experts, correction pens are easily volatilized, so they are harmful to health if they are absorbed by the body through the airways.

It also harms your eyes.

When the correction pens do affect your eyes, they become red and watery and symptoms such as abnormal reactions or vomiting.

Green tea can help the elderly in preventing dementia

A study conducted by university researchers found that green tea is good for brain health if they drink it regularly.

The researchers found that drinking more than three cups of green tea each day reduced the area of gray matter damage.

Damage to gray matter results in Alzheimer's disease and cognitive decline.

These results were obtained in a joint study by several research institutes.

The research paper stated as follows.

“In this cross-sectional study, decreased gray matter injury in elderly people without dementia was found to be associated with intake of green tea rather than coffee. The results of this study suggest that drinking more than three cups of green tea a day helps to prevent dementia. In the future, vertical and basic studies are needed to confirm this result."

What we should mind in child health care

- Children should be limited to less than 30 minutes of watching TV.

Intervals should be at least one hour and the distance from the TV should be more than six times the screen diagonal length.

- Clothes that stick to the body have a bad effect on children's health so they should not be put on children.

- Children should not wear sunglasses for long periods of time, because they will affect their eyesight.

- Leather shoes may cause growth disabilities, so it is not advisable for children.

- If children wear lipstick, the chemical compound enters the body with food, thus causing a bad reaction inside the body.

- If preschoolers read, write or paint for a long time, it can affect their eyesight. So we should keep in note of this point.

If you smoke as soon as you wake up

If you smoke as soon as you wake up, the amount of nicotine in your blood increases and this magnifies the dangers of lung cancer.

According to data, smoking as soon as you wake up increases the blood nicotine concentration regardless of the number of cigarettes, especially the blood nicotine content of the smoked person within 30 minutes right after wakening up has the highest figure.

A fact about gums

If people with gastric disorders chew gums, excessive gastric acid is produced and this can restart or worsen digestive trouble. If you chew gums before meals, symptoms such as nausea and dizziness appear, and gastritis or stomach ulcer may be developed.

You may also acquire a habit of gritting your teeth in sleep if you chew gums too long.

When young people chew gums too long, their facial muscles and structure is affected thus produces a bad effect on their facial shape.

So it is not good to chew gums too long.

The time of chewing gums should be limited to less than 15 minutes.

How should we use digestives?

People use a variety of digestives when they feel gastric discomfort but they can only be effective when used just right.

Digestive acids, tablets, and scopolia gastric tablets, etc. are used for high acidity gastritis.

And it is also used for stomach pain, stomach cramps, and indigestion.

These drugs contain sodium bicarbonate, which is an alkaline and therefore acts to neutralize gastric acid and reduce acidity.

So it works for people with high stomach acidity.

However,if people with low gastric acidity take this kind of digestive, they will have lower acidity, so they are recommended to use digestive enzymes such as ryongsinhwan, kumyongsu, diastase, pepsin, etc.

Sleeping in a sitting position is bad for your health

If you sleep just after lunch in an armchair or sleep lying on a desk, you may feel dizzy, look pale or even feel weary as you wake up.

When you sleep, your heart pulse slows down, blood vessels expand, and the flow rate of blood flowing through the organ becomes relatively slower than usual and you make it far worse if you sleep in a sitting position.

Especially after meals, more blood flows into the gastrointestinal system thus decreasing the blood amount to the brain.

A simple way of treating cervical spondylosis

- If you hold both ear droplets using your thumb and forefinger and pull them down, the flow of blood into the cervical spine is improved.

- Place your cervical spine on the edge of a table and perform a slow rotational exercise.

- Put a pillow under your chin as you lie facedown and move your neck from left to right with the chin as a backing point

- Move the neck from back to forth and from left to right.

- Using your thumb, press the cervical spine (the top of the spine).

- Put one hand on the side of your head and the other hand on your chin. First use the hand on the side and push towards the opposite shoulder and then the hand on the chin to push upwards.

Koguryo’s Catapult (Machine bow)

The catapults used in the period of Koguryo were excellent in their structure, operating principle and processing technique.

We pride in its excellence as it has a sight line which can also be found in present-day weapons although this is a relic of the 1st century B.C.- 1st century A.D.

Weapon experts of other countries' evaluated as follows.

"Its simple and peculiar structure amazes the people of today. It's interesting to know that it works like today's rifle. It's amazing that it was designed two thousand years ago."

Linguist Kwon Mun Hae

Kwon Mun Hae was a linguist of the late 16th century. He passed the examinations and served as an official in the central authority.

After resigning from his position, full of hatred of the ever-growing factional struggle of the rulers, he spent the rest of his life by engaging in education and research until his death in 1591.

On the basis of his thorough research on Korean history, Korean language and Chinese characters, he compiled the "Taedongunbugunok" in 1589. It is the first Chinese character and phrase dictionary of our country and has 20 volumes and 20 books.

It classified and explained historical facts from ancient Korea until the end of the 16th century using rhyming characters.

The book is divided into various catalogues including geography, name of countries, first names, person's names, devoted offspring, faithful women, tree name, flower name, metal name, etc.

Entry words include the common vocabulary and other proper nouns such as names of people, land and country and various other terminology of plants, animals, astronomy, geography, philosophy, history, literature, art, etc.

Each letter was annotated and enlisted with their lexical source together with a brief explanation and historical reference..

The dictionary quotes data from 174 domestic books and 15 foreign ones.

This book is the first of its kind in the feudal era of our country, and it is the oldest and most precious legacy of our country that remains to this date.

Effective Exercise For Women

1. Walking quickly

Walking quickly is one of the simplest and easiest exercises. It helps to increase heart rate and improve cardiovascular health. It is good to walk quickly for at least 30 minutes a day. This exercise does not impose a great burden on the joints and can be done anywhere.

2. Running or jogging

Running or jogging can help to increase heart rate, increase energy consumption, manage weight, and reduce the risk of cardiovascular disease.

Start from a short distance, gradually speed up, and increase the running time to fit yourself.

3. Cycling

Cycling is a major cardiovascular exercise. Take a proper cycling for at least 150 minutes a week.

4. Skipping rope exercise

Skipping rope exercise is interesting, good for heart, and can be done anywhere. Start for a short time at first and then gradually increase the time.

Dancing is a good exercise for heart. Dancing is a whole body exercise that helps to increase heart rate. It is good to dance several times a week.

If You Eat Raw Peanuts

Peanut has abundant vegetable oil, proteins and vitamins, but it is harmful to health when eaten raw. Peanuts are relatively rich in fat, so they are slow to digest and are prone to indigestion if they are eaten raw in large quantities.

In addition, there are always parasites in peanuts because they grow on clay soil, and therefore, you will have parasitosis when you eat peanuts raw.

Therefore, you’d better eat roasted peanuts, not but raw ones.

Patients with hyperlipidemia, cholecystectomy, dyspepsia, and hemorrhage from contusions should not eat raw peanuts.