Sun protection measures for swimming by the sea in summer
1, avoid exposure
Try to avoid 10, where the sun is strongest, from morning to 3: 00 pm, and places such as seaside, beach and mountain top.
2, sunscreen tools
Bring an umbrella, hat, sunglasses and long-sleeved clothes made of cotton and linen. But these can only block some ultraviolet rays, and umbrellas and sun hats can't stop ultraviolet rays reflected from the ground.
Step 3 use sunscreen correctly
Many people think that the use of sunscreen is ineffective, mainly because of improper use. Pay attention to the following points when using sunscreen correctly:
(1) Choose different SPF according to the occasion. The value of sunscreen. The selected sunscreen should not only have the function of preventing UVB (sunburn), but also have the function of preventing UVA (aging and wrinkles). The higher the sun protection value, the greater the burden on the skin, and the more likely it is to cause skin allergies. Therefore, the choice of sunscreen is not that the larger the SPF, the better. And you'd better wash the sunscreen in time when you get home.
Sunscreens with SPF of 10- 15 and SP+ can be selected for daily life, those with SPF of 15-20 and SP++ for shopping, those with SPF of 20-30 and sp++ for traveling, and those with SPF of 30 or above for swimming and sunbathing.
(2) The damage of ultraviolet rays to the skin will exist even in winter, indoors and cloudy days. On cloudy days or in the shade of trees, the intensity of ultraviolet rays will only decrease by about 30%. Therefore, we should insist on using sunscreen all year round, rain or shine.
(3) It takes some time for sunscreen to absorb and take effect, so it should be applied 20-30 minutes before going out.
(4) SPF values cannot be accumulated and cannot be used before makeup. When using sunscreen, you need to remove makeup before applying it.
5], sunscreen use needs to reach a certain thickness to be effective. Too thin can not achieve the desired effect, too thick will cause a burden on the skin. Generally, the application amount is 2mg per square centimeter, 2-2.5g for a pair of arms, and1-1.5g for a face.
4. The damage of sunlight is cumulative. Most melanin in adults is caused by exposure to sunlight in childhood. It's never too early to start whitening, freckle removing and sun protection from children. A six-month-old baby can't take a beach bath. Children should wear T-shirts and sunscreen before they are 7 years old. /kloc-before the age of 0/8, it is the key to sun protection.
5, timely repair after the sun, tanning is a state of burns, for the skin that has been exposed to the sun, it is necessary to repair it in time. Cold compress with cold water or ice water, or ultrasonic cold spray for 20 minutes can reduce the activity of melanin and free radicals, replenish water and minimize the damage of ultraviolet rays. You can also use after-sun repair products containing aloe, mint and other ingredients for repair.
Matters needing attention in swimming by the sea
The first swimsuit
1. Wear a one-piece swimsuit
Because in the open water, even during the day, there will be strong ultraviolet radiation, so if you don't wear a one-piece swimsuit, you will be very easy to get sunburned, and you will be easily burned by ultraviolet rays and even heatstroke.
Step 2 wear colorful swimsuits
Because the wild is not a swimming pool, it is difficult to distinguish colors, especially those with large gray levels. Wear bright colors and red to avoid being found.
The second line is floating.
Floating is necessary, because people who are used to swimming in the swimming pool can rest by the pool when they are tired, but there is no place to rest on the open water, and they can't handle emergencies. It is better to float. Pay special attention to children.
third
Striped tidal law
When you go swimming or play by the sea, you must know the tides in advance. Don't swim in the water at low tide, because the current is fast and easy to be washed away by the sea.
Article 4 Traveling to sea shall be accompanied by a companion.
The collective strength is strong, and fun activities need everyone to participate!
Fifth people suffering from the following diseases are not allowed to swim in the sea.
1. Patients with severe hypertension, coronary heart disease and cerebral thrombosis are prone to vasospasm due to seawater stimulation, leading to cardiovascular and cerebrovascular accidents, such as myocardial infarction and cerebral hemorrhage.
2, rheumatism, asthma: this kind of patient will make the condition worse by bathing in the sea.
Article 6 Preparatory activities
This is a cliche. No matter what you do, you should be prepared for exercise in advance, and swimming in the sea is also necessary. For example, moving the joints of the whole body and gently patting the body with seawater can make the body gradually adapt to the temperature of seawater, thus avoiding cramps caused by improper seawater temperature.
Article 7 dietary taboos
1. You can't go into the sea for one hour after dinner. Because going out to sea immediately after a meal is easy to cause gastrointestinal dysfunction and acute gastroenteritis.
2. You can't go to sea after drinking. Because of poor self-control after drinking, swimming in the sea is easy to drown.
Article 8 In case of distress, timely assistance must be provided.
When your relatives or friends have an accident while swimming, please ask the ambulance personnel in your bathing place for help immediately.
Precautions for swimming in summer
Don't forget to brush your teeth and gargle after swimming.
When people swim, the pool water often enters the mouth, and some germs follow. If you don't clean your mouth in time before eating after swimming, these germs will enter the gastrointestinal tract, and children with poor resistance are more likely to become victims.
2. Wash your skin carefully.
After swimming, germs are easy to remain on the skin, and swimming pools are often disinfected with chlorine-containing preparations, which is easy to irritate the skin. Therefore, it is best to take a bath with nourishing shower gel after swimming. Some people think that since chlorine preparation is acidic, swimming pool water is naturally acidic, so bathing with alkaline soap, thinking that this can neutralize acid and alkali to protect the skin, is actually not good for the skin. Generally speaking, the cuticle of the skin is more acid-resistant, but not alkali-resistant. Bathing with strong alkaline soap makes the skin dry easily. In addition, it should be noted that it is best to apply moisturizing cream after bathing.
Don't be too hasty in cleaning your hair.
Hair is easy to harbor germs after soaking. Chlorine preparation in the pool water will directly damage the dryness of hair, resulting in yellow and dry hair. Therefore, you must wash your hair carefully after swimming, and it is best to use conditioner to strengthen protection. Some people don't use shampoo after swimming, just rinse with hot water or simply dry their hair with a towel, which will leave germs. If the scalp is broken, the wound is easily contaminated.
4. Drop chloramphenicol eye drops appropriately.
It is best to wear goggles when diving to avoid the pool water containing pathogenic microorganisms from entering the eyes and causing conjunctivitis. In addition, the disinfectant in the pool water will also stimulate the conjunctiva. If you feel sore or uncomfortable after swimming, you can use chloramphenicol eye drops appropriately to prevent eye infection.
5, swimming does not forget sun protection.
If you choose an outdoor swimming pool, you'd better go after 4 pm to avoid sunburn. It is recommended to use waterproof sunscreen with SPF above 30 to protect the skin. To ensure the effect, apply it every half hour to 1 hour.
People in poor health had better not go to crowded public swimming pools to avoid getting sick. In addition, friends with infectious diseases or skin damage should not go to public swimming pools to safeguard the health of others.
6. Avoid swimming in the sun for a long time.
Prolonged exposure can lead to sunburn or acute dermatitis, also known as sunburn. In order to prevent sunburn, it is best to use an umbrella to shade the sun after landing, or rest in a cool place, or use a bath towel to protect the skin, or apply sunscreen to exposed parts of the body.
7. Avoid swimming unprepared.
The water temperature is usually lower than the body temperature. Therefore, warm-up activities must be done before entering the water, otherwise it will easily lead to physical discomfort.
8. Avoid eating immediately after swimming.
It is advisable to rest for a while before eating after swimming, otherwise it will suddenly increase the burden on the gastrointestinal tract, which will easily lead to gastrointestinal diseases after a long time.
9. Avoid swimming for too long
Skin generally has three reaction periods to cold stimulation. The first stage: after entering the water, stimulated by cold, the skin blood vessels contract and the skin color is pale. The second stage: after staying in the water for a certain period of time, the blood flow on the body surface expands, the skin turns from pale to reddish, and the skin turns from cold to warm. The third stage: the stay time is too long, the heat dissipation of body temperature is greater than fever, and the skin has goose bumps and chills. This is a taboo period for summer outing, so leave the water in time. Generally, the swimming time should not exceed 1.5~2 hours.
10, avoid swimming before and after meals.
Swimming on an empty stomach will affect appetite and digestive function, and there will be accidents such as dizziness and fatigue during swimming. Swimming with a full stomach will also affect the digestive function, and it will also cause stomach cramps and even vomiting and abdominal pain.
1 1. Avoid swimming in unfamiliar waters.
When swimming in natural waters, don't jump into the water. Under complicated circumstances, it is not advisable to swim around the water surface and underwater to avoid accidents.
12, avoid swimming on an empty stomach.
Many people who like swimming have a feeling that after swimming ashore, they will feel hungry and weak. This is because swimming is a heavy physical exercise, with a large amount of muscle activity in the limbs, which will consume a lot of energy and calories. If we go swimming on an empty stomach, it will cause hypoglycemia, especially for diabetics, and the risk of hypoglycemia coma is greater. If swimmers are hungry, their blood sugar is too low and they consume a lot of energy, they are particularly prone to muscle trembling, dizziness, collapse, coma and even direct drowning. Therefore, swimmers should properly supplement some fruits, milk, candy and other foods before swimming, and then swim in the water. [4
People who have seen how to swim at the seaside to protect themselves from the sun will watch:
1. Various swimming skills
2. Introduction to swimming skills
3. Various swimming posture skills
4. Basic skills to improve swimming speed
5. What are the swimming skills?