Drug toothpaste is prone to side effects. For example, some medicated toothpastes containing more strong irritants such as alkaloids will cause certain damage to human oral mucosa, and even cause oral diseases such as gingivitis, stomatitis and glossitis, which will affect health.

Some medicine toothpastes also contain dyes with strong activity. Over time, using such toothpaste will pollute the surface of teeth and hinder the beauty of teeth.

Four memory climax points of the brain

After getting up in the morning, it was the first orgasm. At this time, the brain sorts out the information input during the day during sleep, and there is no new memorization interference, so the memorization impression is clear.

8 ~ 10 in the morning is the second memory climax. This is because after getting up, after a short activity, my energy and mind have risen to the most vigorous stage, so my memory is large and efficient.

6 ~ 8 pm is the third climax, which is generally considered as the best memory period in a day.

About an hour before going to bed at night, it is the fourth memory climax. The reason is that I fell asleep after processing the memorization information, and there is no "aftershot inhibition".

Don't pinch your knuckles often.

When the finger is squeezed, the cartilage on the joint rubs or slightly collides, thus making a "giggle" sound.

This kind of friction or collision will stimulate the nerves around the joints, so people will feel relaxed. The worse the joints, the louder the noise. This shows that if the joint is too loose, the firmness will be relatively reduced, increasing the possibility of finger contusion.

Don't cross your legs

Many people have the habit of crossing their legs after sitting down. I feel so chic. I don't know that this will make the blood flow in the legs poor and affect health, especially for people with long legs or pregnant women, and it is easy to get venous thrombosis. If you suffer from venous tumor, arthritis, neuralgia, venous thrombosis and other diseases, crossing your legs will make your condition worse.

Therefore, it is best to put your legs naturally when sitting, and try not to get into the habit of crossing your legs.

Don't be exposed to the sun for a long time

Proper sunbathing is beneficial to human health. However, prolonged exposure to the sun is harmful to human health.

This is because too much ultraviolet rays from the sun will bring adverse effects on people's skin, and skin exposure to the sun for too long, especially for a large area of skin exposed to the sun for a long time, may cause malignant melanoma. Even if the tumor doesn't grow, if the sun is exposed to the skin for a long time, it will also produce harmful reactions and cause acute skin damage.

Holding the chest is good for health.

Holding out the chest can increase the vital capacity by about 20%, and the oxygen content in the blood will also increase, which is conducive to promoting metabolism. With the increase of vital capacity, the oxygen obtained by various parts of the body also increases, so that people are not easy to get tired.

Holding out the chest can also enhance the memory of the brain, which needs 40% of the whole body's oxygen. Its blood demand is 30 times that of other organs.

Holding one's head high also helps to reduce the pathological changes of the spine, delay the aging process and make people old. Looks fresh and energetic.

It is unhealthy to loosen your belt after a meal.

Loosening the belt after meals can reduce the intra-abdominal pressure, increase the activity of digestive organs and the load of ligaments, thus promoting the aggravation of intestinal peristalsis and prone to intestinal volvulus. Causes abdominal distension, abdominal pain, vomiting, and is prone to gastroptosis.

Don't hold your shit.

Decreased sensitivity of rectum to fecal pressure will lead to long-term constipation, which will weaken defecation muscles and cause anal fissure and hemorrhoid bleeding. Sometimes it can cause anal sphincter spasm, slow intestinal peristalsis, intestinal obstruction and other diseases.

Holding the stool will prolong the time that the stool stays in the body. There are some harmful components in feces, which are the pathogenic factors of colon cancer. These toxic substances are extremely harmful if they stay in the intestine for a long time.

Harm of holding urine

1. Holding urine can cause urinary tract infection.

2. Holding urine can lead to cystitis.

3. Holding urine can lead to prostatitis.

4. Holding urine can induce micturition syncope.

5. Long-term urination may cause bladder injury.

6. Holding the urine will also cause physical and psychological stress, which will increase the blood pressure of hypertensive patients and cause angina pectoris and arrhythmia in patients with coronary heart disease.

Don't smoke when you go to the toilet

Some smokers like to smoke in the toilet, thinking that the smell of smoke can drive away the bad smell. In fact, doing so will inhale harmful gases, which is not good for your health.

When the smell of feces is mixed with harmful gases emitted by cigarettes, more harmful gases will be produced. When smokers smoke, they also inhale these more harmful substances into their lungs. Therefore, it is not advisable to smoke when going to the toilet.

Don't read books and newspapers when you are in the toilet.

Reading books or newspapers often during defecation will ignore defecation, the defecation action will be uncoordinated, and the consciousness will inhibit defecation. If the feeling of defecation is stopped for a long time, the rectum will gradually lose its normal sensitivity to the pressure stimulation of feces, which will lead to the feces staying in the large intestine for too long, absorbing too much water and making defecation difficult.

Furthermore, reading books and newspapers during defecation will prolong the defecation time accordingly, because sitting or squatting will lead to pelvic congestion, varicose hemorrhoids and finally hemorrhoids.

It is not advisable to press the electrical switch with your left hand.

There is a lot of water in human body, which can conduct electricity. When people get an electric shock. If an electric current passes through the heart, people will die.

The human heart leans to the left of the body. When the left hand gets an electric shock, the probability of current passing through the heart is greatly increased. If the right hand gets an electric shock, the current is likely to pass through the right side of the body, that is, next to the heart, without causing death.

Therefore, when touching electrical switches, lamp holders and other things that may be charged, use your right hand.

How to protect your eyes by watching TV?

When watching TV, you should sit in front of the TV screen, and the distance from the TV screen should generally not be close to 5 times the diagonal of the TV screen. When you sit too close or squint, the lens and muscles of your eyes will have to adjust hard. After a long time, eyes are easily tired.

The height of the TV set should be flush with people's line of sight, or slightly lower than the audience's line of sight, so that the muscles of the head and neck can be relaxed.

Don't watch TV too long. It's best to rest for about an hour. You can ignore, close your eyes or rub your eyes when you rest.

It is worth noting that children's nervous system development is not perfect enough, let alone watching TV for a long time. In addition, watching TV in a dark house, the small and bright screen has a strong contrast with the surrounding dark background, which is easy to make your eyes tired. It's best to turn on the small light next to the TV, or use the scattered light outside.

It is not advisable to watch TV after drinking.

The harmful ingredients in wine do great harm to the eyes, especially methanol, which will shrink the optic nerve and seriously lead to blindness.

Watching TV will reduce vision, and drinking alcohol will damage the optic nerve. Both of them are done at the same time, which is very harmful to vision. Therefore, don't watch TV after drinking, especially for the elderly.

Disease prevention must be carried out in air-conditioned rooms.

In air-conditioned rooms, people are easily infected with tuberculosis, pneumonia and so on because the air is not circulating. If there is no ventilation device installed in the air-conditioned room, harmful gases such as carbon dioxide and carbon monoxide will accumulate continuously, the concentration will increase, and negative ions will decrease, thus causing discomfort such as listlessness, dizziness and memory loss.

The air-conditioned room has low humidity and tends to be dry. If you stay too long. It can also make your throat dry and even painful. At the same time, this environment also has adverse effects on human skin, which is easy to cause dysfunction of sweat glands and sebum, skin fatigue, allergies and wrinkles.

In order to prevent the above diseases, it is best to install a ventilator at the same time when installing an air conditioner; In addition, put a basin of water indoors; Insist on opening the window twice in the morning and evening; The room temperature of the elderly should not be adjusted too low, it should be around 26℃, and the temperature difference between indoor and outdoor should not exceed 6℃ ~ 8℃.

It is not advisable to blow more air conditioners for heatstroke prevention.

Due to long-term air conditioning blowing or improper use of air conditioning, the human body is in a cold and hot environment. Some people have symptoms such as cold, fever, sore throat, tonsillitis, dizziness, cough, loss of appetite, and some patients have diarrhea symptoms due to frequent air conditioning blowing and abdominal cold.

The doctor reminded: Don't neglect your health because of temporary comfort. The hotter the weather, the more you should strengthen heat-resistant exercise and reduce the time in air-conditioned rooms. People who often work in an air-conditioned environment should try not to use air-conditioning after returning home.

Long-term light irradiation needs calcium supplementation.

Studies have shown that people who study or work in ordinary light for more than 4 hours can reduce their calcium absorption capacity by 75%. It can be seen that long-term light can make people lack calcium.

Therefore, people who often work and study under the light should eat more calcium-containing foods to meet the needs of health.

The best time for daily life

1. The best time to exercise

Exercise in the morning should avoid the peak of air pollution at 6 ~ 7 o'clock. In the morning 10, moderate exercise at 3 ~ 4 pm is most beneficial to health.

2. The best time for a nap

In the afternoon, it is best to take a nap around 1, because at this time, the human body feels naturally reduced and it is easy to fall asleep.

3. The best time to sleep at night

It is best to sleep at night 10. Because people's deep sleep time is generally 12 from afternoon to 3 am. At this time, people's body temperature, breathing, pulse and general state all enter the lowest period, which is the most effective sleep period. After about an hour and a half, people will fall into a deep sleep.

4. The best time to brush your teeth

It should be within 3 minutes after each meal, because at this time, the bacteria in the mouth begin to decompose the acidic substances in the food residue and corrode and dissolve the enamel.

5. The best time to protect the skin

The metabolism of human skin is the most vigorous at night 12 to 6 am, so skin care before going to bed can promote skin metabolism and protect skin for fitness.

6. The best time to open the window for ventilation

From 9: 00 a.m. to 1 1 p.m., it is best to open the window for ventilation from 2: 00 to 4: 00 p.m. Because the temperature rises at this time, the inversion layer disappears, and the harmful gases deposited at the bottom of the atmosphere gradually disperse.

Massage the head can eliminate mental fatigue.

A large amount of blood flows through the brain for its thinking activities. After mental activity, you need to consume a lot of oxygen and nutrients. When these supplies can't meet the demand, or the metabolites stay, it will lead to nervousness and fatigue.

Massage the head, on the one hand, can make the brain have a short rest, on the other hand, it can regulate blood circulation, bring enough nutrition, take away the stranded waste, and eliminate mental stress and fatigue.

Exercise your fingers and strengthen your brain.

Stimulating the brain by moving fingers can prevent and delay the degeneration of brain cells and help maintain the sound function of the brain.

Fingertips engaged in some more precise work, such as practicing calligraphy and painting, can exercise skin sensitivity. Moving one hand can only stimulate the contralateral cerebral hemisphere, and you can practice your hands alternately at ordinary times.

For example, often stretch your fingers, close your eyes and touch buttons, cultivate flowers and plants, play fitness balls or rub walnuts with your hands, play ball games and carry out various other beneficial activities.

Practice your left hand and strengthen your right brain.

People with developed right brain are primitive, while the left hand is dominated by the right brain. Training the left hand is of positive significance to developing the right brain.

Usually consciously hold chopsticks in your left hand, cut your nails with your left hand, write with your left hand, or brush your teeth with your left hand every morning. If you insist on using your left hand every day, the function of your right brain can be gradually improved.

Knocking on the back relieves fatigue

Knocking on the back, like other massage methods, can reflexively regulate visceral activities, promote blood lymphatic circulation, and has the functions of promoting qi circulation, relaxing muscles and tendons, calming the nerves and inspiring people.

Pat is often used to knock on the back. You can tap the body surface with virtual palm, or tap the body surface with virtual fist, palm root and palm side. When flapping, use your wrist to exert your strength, which requires coordination and dexterity, and the force should be elastic, especially suitable for muscle-rich areas such as shoulders, back, waist and limbs.

Combing your hair can keep you healthy.

Wooden comb has unique health care function. Unlike plastic combs, it is not easy to generate static electricity. Comb your hair with a wooden comb, which can prevent dizziness, insomnia and hypertension. Can be used for treating young people's gray hair, alopecia areata, angioneurotic headache, migraine and eye diseases.

Gargling with tea can strengthen teeth.

Rinse your mouth with tea after every meal. Let tea wash teeth and both sides of tongue in the mouth, so as to remove tartar, improve the physiological function of orbicularis oris muscle and oral mucosa, and enhance the acid resistance and corrosion resistance of teeth.

Saliva is a natural anticancer agent.

Saliva is a natural anticancer agent, which has the function of transforming carcinogens into harmless substances.

Therefore, you must chew slowly when eating, and it is best to chew 30 times in one bite to promote saliva secretion.

Fat neck is harmful to human body.

Like the waist and abdomen, the neck is prone to fat accumulation. Once the neck fat accumulates, the neck muscles will relax, giving people a feeling of aging.

In addition, because of fat, the movement of neck muscles is affected, and the muscle contraction is slow, which will make the head movement inflexible and give people a feeling of unresponsiveness.

It can be seen that controlling the fat accumulation in the neck and strengthening the strength of the neck muscles are problems that should be paid attention to in fitness and delaying aging.