1. How to sell myopia goggles

1. Pure myopia crowd

Because the distance between the light in the water and the distance between the swimming mirror distance is closer than the frame, it is generally better to choose lower than the usual myopia 50 to 100 degrees (note: but not to wear higher than the usual degree, otherwise you will dizzy underwater)EssenceHowever, if you have a high requirements for corrected vision, it is also possible to choose a 25 degrees.

2. myopia crowd with astigmatism

The number of astigmatism can be divided by 2, plus the degree of myopia (the number of myopia + 1/2 astigmatism), and then subtracts 50 to 100 degrees accordingly, this is the ideal swimming mirror degree.

2. How to match the swimming mirror with myopia astigmatism

Take an example to explain it.

The degree of actual myopia and astigmatism:

Left eye: myopia (S value) -2.50 (250 degrees myopia); astigmatism (C value) -1.50 (myopia 150 degrees)

Right eye: myopia (S value) -2.00 (200 degrees of myopia), astigmatism (C value) -1.00 (astigmatism 100 degrees)

The appropriate degree of the swimming moster:

Left eye: myopia -2.50x0.86 = -2.15; astigmatism: -1.50x0.86 = -1.29

Right eye: myopia -2.00x0.86 = -1.72; astigmatism: -1.00x0.86 = -0.86

However, when the actual swimming moster is equipped with an integer degree of an increase of 50 degrees, the more suitable swimming mirror should be:

Left eye: 200 degrees of myopia; astigmatism 100 degrees

Right eye: 150 degrees myopia; 50 degrees astigmatism

However, for an example, this mild myopia plus astigmatism is actually enough to wear a flat -light mirror. There is no need to not be equipped with a swimming moster that is specially equipped with astigmatism.Even myopia swimming moster has rarely less than 150 degrees, basically 150 degrees or 200 degrees, and the finished swimming moster basically only has myopia swimming moster.Therefore, if the degree is high, if you want to see more clearly underwater, you must find a merchant to customize the goggles of myopia plus astigmatism.

The above is the information for reference only. If you want to match a suitable myopic astigmatism mirror, you still have to find a customized merchant for detailed consultation.

[What is a racing goggles] What is the racing mirror how to extend the performance of the swimming mirror anti -fog performance life

The racing goggles actually refer to the swimming mirror that is relatively small and the streamlined shape is relatively small.Common mirrors on the market can be called a racing mirror in general, but it is still much worse than a professional racing mirror.How to choose a good swimming goggle, the appearance, material, performance, and price of each aspect of the good shogue:

Appearance: A well -made swimming moster, the lines of the appearance should be very Smooth, have a good water resistance design, the color is very soft, and it can distinguish it from the appearance that is a racing swimming mirror or ordinary swimming mirror. At the same time, it is exquisiteThe outer box packaging.

Material: The mirror sheet uses impact -resistant polycarbonate (organic glass). The headband, nasal bridge, and mirror frame are made of pure silicone material (sand gel), which is harmless to the human body, and the feel is very soft.Comfort.

Performance: In addition to the functional distinction between the Swimming goggles, the general Swimming goggles, and the myopia goggles.A good swimming moster also has high -performance anti -fog, 100 % anti -ultraviolet treatment, sealing function, and play a role in protecting and preventing damage to the eyes.

price: A well -made swimming moster, the price of a single one is between one hundred and 45 yuan. Of course, the price of some swimming moster contains the price of the brand.

How to properly keep the Swimming goggles?

1. Do not use various organic solvents when removing to avoid deformation or discoloration of swimming moster.

2. In a wet state, putting together with Swimsuits and towels for a long time will cause stains, so put in plastic Bags or small boxes after use.At the same time, keeping it in water for a long time or moisturizing will reduce the anti -fog effect of the Swimming goggles, and it will also cause moldy phenomena.Therefore, long -term collection should be placed in normal temperature and dry and ventilated places, and talcum powder should be added to maintain.

3. When Swimming goggles, please do not place in direct sunlight or extreme high temperature to avoid causing swimming mirror deformation and performance deterioration.

4. Do not use any material to directly wipe the inside of the lens to prevent the fog film.

How to extend the performance life of swimming mirror prevention fog

1. The ultraviolet rays of the sun will destroy the anti -fog performance of the Swimming goggles. Try to avoid placing the swimming moster in the sun.

2. The anti -fog performance of general swimming moster will fail at 80 degrees Celsius.Therefore, you should avoid letting the Swimming goggles contact the thermal source, and avoid placing the Swimming goggles in the storage box irradiated by the sun.

3. The anti -fog performance of the standard swimming moster can be maintained for more than 100 hours. If the mirror surface is found when it is just used, most of the reasons are that the user swims in the unclean or oil -quality water, so that the lens anti -fog surface is attached to a one.Layer oil dirt is blocked by the anti -fog effect. At this time, as long as the oil dirt on the lens with a neutralized lens is used to restore the anti -fog performance of the goggles.

4. Instructions for the use of anti -fog function: Anti -fog agents and anti -fog membranes are all hydrophilic substances. Therefore, when consumers use Swimming goggles for the first time, they should be washed with water.Performance is fully played.

1. When did the Swimming ring invented?

In the past, some people thought that the lifeblonga was introduced into China from Europe and the United States. In fact, the lifeburn circle was created and invented by our Chinese.

As early as two or three thousand years ago, my country had a "life -saving circle", which was the dry gourd.At that time, the clever Chinese people found that holding the dry gourd melon can float the body on the water and drown the gourd melon to become the most primitive life -saving equipment.Later, most of the vessels sailing at sea brought gourds to prevent unexpected.It can be seen that the ancient people of my country used the dry gourd to cross the river. This is the most primitive lifebuilding circle.

In the song Dynasty, the production method of the lifeburn was a step forward. Some people began to use soft wood, reeds, etc. to be prepared into a ring object, so that people can drill in and make the ring supporting people.The gourd melon is much more convenient, and it has become a veritable life -saving "circle".Han Shizhong, who was anti -Golden, who was anti -golden hero Yue Fei at the same time, sent Wang Quan to Jinshan to fight against the enemy. Before leaving, Han Shizhong ordered him not to use the boat to cross the river, so as not to be found by the enemy.So Wang Quan sent a circular floating ring made of cork to each soldier, allowing them to restrain the floating ring on the waist and cross the river.The soldiers quietly crossed the river under the leadership of the royal power.At that time, the floating ring used by the royal power was the predecessor of the modern lifebing circle.From the time to modern times, with the application of new technologies and new materials, various life -saving equipment appeared: lifeboats, life jackets, and uniform.But the traditional equipment of the lifebuilding circle is still retained by people, and it is still the easiest life -saving Tool.

2. What materials are the swimming rings made

The material of the inflatable Swimming ring is relatively single. Most of them are made of ordinary PVC materials. Most of the domestic PVC materials are the main in China. The 6P environmental PVC is better.

3. What material is the best material in the life circle

At present, the main forms of domestic Lifeline products include polystyrene packaging cloth life rings, polyurethane polyethylene composite lifebladder, and knot -type polyethylene lifebirth circle.

1. Polyetstics packaged cloth life ring

The polystyrene cloth life ring is mostly used in the inland rivers. The rim core material of the life ring is made of polystyrene material.Generally, the production process is to wrap glass fiber cloth in the rotary core material, and apply 3 layers of phenolic resin to form a sealed glass steel shell, and then wrap and apply several layers of paint.

2. Polyethylene compound lifebuilding circle

Polyethylene composite lifebrows are used as high -density polyethylene materials as shells. The internal rechargement of polyurethane foam materials is a new type of lifebuilding in China.At present, more than 100,000 annual output has reached more than 100.The composite life ring solves the problems of oil -resistant oil tolerance of polystyrene bales, in high temperature environments and long -term radiation in ultraviolet radiation, which is prone to aging, paint layer peeling, and complex manufacturing process.This type of lifebuilding has the advantages of solid color, Smooth surface, anti -aging, large mechanical strength, and corrosion resistance, but production costs are higher than that of polyethylene Bags.

3. Knotchye polyethylene foam life ring

The polyethylene lifebuilding circle is also known as the citrine polyethylene foam lifebuilding circle. It is made of low -density polyethylene foam. It is a new technology product. At present, only a few companies in China can produce.The circle of its products is only made of a single material of polyethylene. The circle body is full of elasticity. The surface is bright and beautiful on the surface. The strength, buoyancy, oil resistance and erosion resistance are not comparable.At present, the domestic product has high technology and high costs. The products produced only supply military or exports.

The benefits of swimming in summer

1. Prevention of heatstroke and cooling

In the hot summer weather, choosing the indoor pool swimming can play a role in preventing heatstroke and cooling, because the human body exudes calories in the water nearly 20 times faster than in the air.The calories have played a good cooling effect, one of the best choices for heatstroke prevention.

2. There is weight loss

Because the human body heat dissipates fast in the water, and swimming requires full -body exercise, the hands and feet, the head and the head exercise the water together, and the resistance of the water is also large, and the person consumes more physical fitness in the water. For people who want to lose weight, it is nothing more than those who want to lose weight.It is a very good and effective way.Especially for women, it can also play a role in thin buttocks, and the body shape is more beautiful.

3. Improve lung capacity

When swimming, you can choose a submerged swimming or breaststroke appropriately, or slowly take a deep breath to make the lungs full of air.Twitter.Such long -term training can slowly improve cardiopulmonary function and increase lung capacity.

4. Enhance resistance

Because the human body heat dissipates fast in the water, the body needs to continuously supplement energy in order to adjust the body temperature, promote the acceleration of metabolism in the new city, continuously balance the temperature of the body and outside body, increase the ability to adapt to changes in the outside world, and play a role in resisting the cold.swimming people, their own resistance is gradually increasing.

5. Main perfect figure

Because people need to overcome the various resistance of water, consume physical energy, perform anaerobic exercise, can effectively burn fat into muscles, and this is just different from sports and bodybuilding on land.swimming can reduce the various impact of the bones on the land, and by overcoming the water resistance, the overall muscles of people can be more assembled and more well -proportioned curve beauty.

6. Help to prevent spondylosis

When swimming properly, retreating can allow the whole person to lie on the water surface, and the support of hydropower. At this time, the human spine does not need to support the importance of the entire body.Going down can effectively prevent spondylosis.

7. Help the Skin more flexible and elastic

During the swimming process, the human Skin's Skin is water and friction of water, and the Skin is effectively massaged to make the Skin more flexible. At the same time, swimming is different from land motion, which can effectively reduce salt in sweat to the Skin in the Skin.Stimulation.

8. Help children grow taller

swimming is divided into free swimming, breaststroke, backstroke, butterfly swimming, diving swimming, etc., no matter which method, it needs to be used together, and the whole body exercise and coordination, especially the effective stretching of joints and ligaments.Suitable for growth.

Disadvantages of swimming in summer

1. Suitable to suffer from infectious diseases

Because there are many crowds in the swimming pool, there will also be a large number of infectious disease bacteria in the water. If the immunity is not good, it will be easily infected if it stays in the water for too long.

2. Triggement cramps

swimming for a long time will cause the muscle to overwork and cramps. In severe cases, drowning may occur, which is also a major disadvantage of swimming.

What time is the best time to swim in summer

The strongest ultraviolet of the sun (will cause the greatest damage) is between 10 am and 3 pm.It is best to choose to swim at 4 pm.Especially people who work indoors are less sun -exposed and more prone to sunburn.

But try not to swim at 10 pm, otherwise insomnia will cause insomnia due to nervousness.

summer Safe swimming Common Sense

1. Before swimming, you should keep warm -up and then launch. Although the summer is hot, if in the water, the physical temperature will be lost for a long time, which will easily lead to cramps and may be risk of drowning.

2. When we swim, you must swim with the accompaniment of adults. If you are not skilled in your own technology, do not go to Sham Shui District to swim.

3. When swimming in the river outdoors, it is necessary to pay attention to the water quality problems in the river. To prevent the emergence of grasshoppers, water snakes, and even poisonous snakes.

4. When we are swimming, some people sweat directly in the water. This is very harmful. We must wait for the sweat to dry and then launch.

5. Before swimming in the swimming pool, the eye drops are dripped first. The current swimming pool is actually very dirty. There are many bacteria. When people stay in the water for too long, the eyes will become red and itchy allergic symptoms.

summer swimming

1. Avoid swimming before meals

Emptor swimming can affect appetite and digestive function, and also cause accidents such as dizziness in swimming; full swimming can also affect digestive function, and also cause stomach cramps, and even vomit and abdominal pain.

2. Avoid swimming after drama

swimming immediately after strenuous exercise will make the heart aggravate the burden; the sharp decline in body temperature will weaken resistance, causing colds and laryngitis.

3. Avoid menstrual swimming during menstrual period

swimming during menstruation, germs are likely to enter the uterus, fallopian Tube, etc., causing infection, leading to irregular menstruation, excessive menstruation, and prolonged menstruation.

4. Avoid swimming in unfamiliar waters

When swimming in natural waters, do not rashly launch.Those around the waters and underwater conditions should not be swimming in water to avoid accidents.

5. Avoid exposing swimming for a long time

Long -term exposure will cause sunburn, or cause acute dermatitis, also known as sunlight burns.In order to prevent the occurrence of sunburn, it is best to use an umbrella to shade or rest in a shade of the tree after landing, or protect the Skin on the body with a bath towel, or apply sunscreen on the body's naked place.

summer swimming equipment

1. Swimsuit

Swimming trunks must be fitted.If it is too large, it is easy to wander when swimming, so as to increase physical load and resistance and affect swimming movements.Therefore, the swimming suit should be comfortable and comfortable to wear on the body.

2. Swimming hat

Wearing a swimming cap during swimming, especially women, can prevent the hair from being scattered. Sometimes the water quality is not good and can prevent the hair from becoming yellow.Most of the swimming hats are bright in color, which is convenient for life -saving staff on the shore.

3. swimming mirror

If the water quality is not clean, the bacteria can easily enter the eyes during swimming, resulting in red eye disease.In order to prevent eye diseases, we need to wear swimming glasses for swimming.For those who are new to swimming, wearing swimming glasses can also let them open their eyes in the water.

4, earplugs

It is unavoidable to flow into the ears when swimming.The ears are uncomfortable after water, and sometimes cause pain and affect hearing.In order to prevent water from entering the ear, earplugs should be prepared.

5. Floating items

For beginners, it is best to have some floating items, such as the survival circle (ClothesCure, Foam plastic water board, etc.However, when preparing these items, you must always check the life jacket and the circle to prevent accidents to prevent accidents.

6, bath towels and slippers

bath towels and slippers are a must -have for swimmers. After swimming, go ashore after swimming, dry the body with a towel, put on bath towels, and put on slippers to keep warm, prevent colds, and be more hygienic.

7, nasal clip

During swimming, because water waves often pour water into the nostrils, they produce water and cough, especially for beginners.In order to prevent water from entering the nostrils, it is best to prepare a nasal clip. It can force the mouth to inhale with the mouth instead of inhaling without nose, which can avoid water.

Benefits of swimming

1. swimming can enhance myocardial function

When people exercise in the water, all organs are involved in it, with a lot of energy and blood circulation accelerated to provide more nutrients with sports organs.The acceleration of blood speed will increase the load of the heart, which will speed up the frequency of beating, and the contraction is strong and powerful.People who swim frequently have excellent heart function.The effect of water during swimming makes the blood of the limbs easily return to the heart and speed up the heart rate.Long -term swimming will significantly increase the heart movement, the contraction is strong, the thickness of the vascular wall increases elasticity, and the amount of blood output per combination increases.Therefore, swimming can exercise a strong heart.

2. swimming can enhance resistance

The water temperature of the swimming pool is often 26 degrees to 28 degrees, soaking in water is fast and high, and energy consumes great energy.In order to replenish the calories emitted by the body as soon as possible, for the need for hot and cold balance, the nervous system quickly responded to accelerate the metabolism of the human body, enhance the human body's ability to adapt to the outside world, and resist the cold.Those who often participate in winter swimming, due to the improvement of the body temperature regulation function, are not easy to hurt the wind, it can also improve the endocrine function of the human body, increase the pituitary function, and increase the resistance and immunity to the disease.

3. swimming can help fat burning weight loss

When swimming, the body is immersed in water directly. The water is not only resistant to resistance, but also the heat conduction performance is very good. The heat dissipation speed is fast, so it consumes a lot of calories.It's like a ripe egg, the cooling speed in the air is far less fast in cold water. Experiments have proved that the calories consumed by Running in the standard swimming pool for 20 minutes are equivalent to the same speed on the land for 1 hour on land.The calories consumed in 14 degrees of water for 1 minute are as high as 100 kcal, which is equivalent to the calories emitted in the same temperature air.It can be seen that exercising in water will make many people who want to lose weight and achieve more effort. Therefore, swimming is one of the most effective movements to maintain body figure.

4. swimming can improve the flexibility of the body

When swimming, people usually use the water's buoyancy to lie down or lying on the water in the water.Due to the reduction of the impact on the bones during the ground motion, the chance of the bones is reduced, and the Bone joint is not easy to deform.The resistance of water can increase human movement intensity, but this intensity is different from the equipment training on the land. It is very soft. The strength of the training is easily controlled in the oxygen field.The muscles can make the whole body Smooth and beautiful.

5. swimming can help relieve stress and depression

Endorphin is a kind of good hormone that can improve people's emotions. swimming can effectively stimulate the secretion of endorphins and help people alleviate the pressure of daily work and life. In addition, swimming can make people fully relax themselves like yogaIf the body is combined with a regular deep breathing, the effect will be better.At the same time, swimming can calm people, eliminate external interference, and become more focused, which naturally reduces people's tension and depression.Related research confirms that swimming can also help restore the brain function that is damaged due to stress through a process called hippocampus regeneration.So, if you don't feel in your state one day, you may wish to change to the Swimsuit and jump to the pool to release your emotions!

6. swimming can improve Skin texture

When people swim, the water of water, sweat, and fat glands in water plays a good massage effect, promotes blood circulation, and makes the Skin Smooth and elastic.In addition, during the water, it greatly reduces the stimulation of the Skin in the sweat.

7. swimming can shape muscle lines

People can strengthen the strength of the whole body through swimming.Running can improve people's legs, and swimming requires muscle coordination force in all parts of the whole body, so it can exercise the muscles of the whole body.Leg -kicking back, pulling water on both arms, stretching back, tightening abdomen to increase the strength of the legs and maintain the stability of the hip. The basic movements of these swimming make every piece of muscles of the whole body HIGH.Avoid the effect of pit fathers such as muscle unevenness that may cause equipment exercise.

8. swimming can improve Bone quality

Once upon a time, many people sneered at the view of "swimming can improve Bone quality". After all, it seems that only weight exercises can achieve this goal. However, a study published in the "Applied Physiology" magazine supports this view.Because there are some moral disputes on the human body's Bone inspection directly, the researchers then used mice as a research object and divided them into three groups: the Running group, swimming group, and control group (non -exercise).Studies have shown that Running can best increase Bone density, and compared with the control group, the swimming group does better, whether in the Bone density or the increase in the weight of the thigh Bone.It can be seen that if you want your bones to be healthier, swim!

9. swimming can reduce inflammation risk

As we all know, swimming can help enhance myocardial function and improve cardiovascular health. Related research further confirms that aerobic exercises such as swimming can help reduce inflammation risks and prevent diseases such as cardiology caused by this.In addition, reducing the inflammation risk in the entire system can also alleviate the deterioration of many other diseases and benefit a lot.

10. swimming can relieve sporty asthma

There is no more sadness than dyspnea during exercise! Compared with the dry gym or Outdoor gym in air, people can breathe wet air and improve respiratory function during swimming.Studies have confirmed that swimming can not only relieve the symptoms of asthma, but also fundamentally improve the health of the lungs.The most typical example is the Korean swimming player Park Tae -hyun. He suffered from asthma when he was a child. Then his parents asked him to practice swimming to help relieve the symptoms. As a result, not only the asthma disappeared, but also became the Olympic champion. It was really good!

11. swimming can make people smarter

Can exercise improve people's mental state, but can swimming really make people smarter? Researchers from Australia have studied a group of children participating in swimming training courses, and with another group of children who did not study swimming,Group.The results show that children who often swim often have faster and better in terms of grasping language, learning cycling, building self -confidence, and physical development.In addition, because swimming needs to repeatedly calculate the distance of the tour, people who swim frequently are also excellent in terms of arithmetic!

12. swimming can prolong life

Everyone knows that exercise can improve health and extend life, but research has further confirmed that swimming has done the best in these two aspects.Researchers at the University of Southern California tracked and observed for 32 years of men aged 20-90 years old. The results showed that men with swimming habits are lower than men who are Running, walking or not exercising often in terms of mortality rates.Nearly half.It can be seen that if you want to live long, swimming is definitely a good dose!

Disadvantages of swimming

1. Suitable to suffer from infectious diseases

Because there are many crowds in the swimming pool, there will also be a large number of infectious disease bacteria in the water. If the immunity is not good, it will be easily infected if it stays in the water for too long.

2. Triggement cramps

Time swimming will cause the muscle to overwork and cramps. In severe cases, drowning may occur, which is also a major disadvantage of swimming.

Of course, as long as we swim rationally, the benefits it brings to us is more disadvantaged.Therefore, pay attention to various possible problems when swimming.

swimming exercise is appropriate several times a week

Professional swimmer is a high -intensity training every day, only on Sunday.The general non-professional is 2-3 times a week.If you want to lose weight, you have to ensure the amount of exercise. For example, you are almost one and a half hours at a time.

swimming skills

1. Find the location of the dessert first

That position is that after you have the balancing of the back, the body is then practicing the balance, kicking the water softly, always keeping the feet in the water marks behind you. When you relax and balance, turn your head up and look up.The head is exposed, and the hiding head is only the face on the water, keep the head and the spine straight, and try different rotation angles until you find you feel the most comfortable position, that is, desserts.Some people's desserts are 90 degrees, while others are particularly thin. The balance is the best when turning a certain angle on the back.

After practicing three times to change your arm, you can simply and calmly enter the whole swimming state.Maintaining a consistent time to change the arm. This rhythm is: look down, change the arm, change the arm, change the arm, change the arm, change the air, look down, then change the arm, change the arm, change the arm, go directly to the dessert position after three timesEssenceAfter the rhythm of the arm changing is skilled, the center of gravity changes also has the rhythm, and the center of gravity is converted from one to the other.And if you try to extend your body line, you can turn the body smoothly like a fish, forming a beautiful and Smooth swimming style.

2. Step in the water calmly

The more traditional method of stepping on the water: cycling feet, two feet like a bicycle, turn alternately to step on the water, which is more tired, because it is constantly stepping on; a flexible way: the breaststroke feet, the same as the breaststroke, the two feet are put away at the same time at the same timePassing out downward, do not need to pinch your legs after kicking, and put it away (the frequency of the water is better controlled).

A word, calm.Stepping on the water is like walking. If you are comfortable, you can go.

swimming exercise is appropriate several times a week

If conditions permit, you can go three times a week and take the lead in protecting the hair quality.It can be two or three hours a time.It is appropriate all year round.Do not swim on an empty stomach and swelling.

swimming equipment

Swimsuit, Swimming trunks, swimming mirror, swimming hats, these are fine. If you can't swim, bring water sleeves or swimming rings.