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I have experienced. It could be that you weren't feeling well that day, or your energy wasn't guaranteed (swimming hungry), or the water was really cold. My solution to this is:
Do a good warm-up exercise, try to keep moving in the water after entering the water, yes, keep moving. In fact, it is not like this every time you swim, and many times it depends on the condition of the body.
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It can't all be water! You may be afraid of the cold! You can swim "It's better to move!
Or maybe you're hungry.
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This is a natural reaction, if it's not cold, it's weird, if it's cold, take a break for typhoid fever, otherwise you'll catch a cold.
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The water on your body has evaporated and dried up, so it's cold.
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After swimming ashore, there was some water on your body. Water evaporates and absorbs heat, so it feels cold.
The swimmer has just come ashore from the river, and the water on his body will absorb heat from his body due to evaporation, so he will feel cold When the wind blows, it will speed up the evaporation of the water on his body, thus speeding up the heat absorption, and the person will feel colder.
This is a phenomenon of evaporation:
1) Evaporation is a vaporization phenomenon, and vaporization requires endothermy;
2) The methods to speed up evaporation are: increase the temperature of the liquid, increase the surface area of the liquid, and speed up the air flow on the surface of the liquid A swimmer has just come ashore from the river, and the water on his body will absorb heat from his body due to evaporation, so he will feel cold When a wind blows, it will speed up the evaporation of the water on his body, thereby speeding up heat absorption, and he will feel colder
When a person goes ashore after swimming, the water on his body evaporates and absorbs heat, and he will feel cold When the wind blows, it accelerates the evaporation of water on his body, and he absorbs heat quickly, and he will feel colder
According to physics, when a person swims ashore, the water on the body evaporates, and the evaporation of water is an endothermic reflection that absorbs the heat from the surroundings, so the person feels cold. It is recommended to wrap a bath towel when you go ashore to prevent colds.
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Because in the water, you get used to the temperature in the water, and the water on your body is evaporated, which will take away a lot of heat, so you will be chilled.
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Swimming is a very energy-consuming sport, you don't feel the heat is losing when you exercise, and you feel it when you finish swimming.
The water temperature in the pool is lower than body temperature, so from a physical point of view, as long as you are in the pool, the heat will be lost.
When you go ashore, you have water on your body, and there is wind on the shore, and the wind blows through it to speed up the evaporation of the water on your body and take away the heat.
The above three reasons.
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No way. Generally, after swimming, the body is hot.
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This is because the water on the body evaporates and absorbs the body heat after going ashore, which makes it feel cold.
Evaporation can be carried out at any temperature, and a person who comes ashore from the water after a winter swim has a certain amount of moisture on his body, and the water on his body becomes gaseous through evaporation, and this process is an endothermic process.
When evaporating, heat should be absorbed from the liquid to reduce the temperature of the liquid, so evaporation has a cooling effect; In winter, when the outside temperature is lower than the human body, it absorbs body heat, thus making people feel cold.
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The heat transfer of water is not fast, plus movement, so it is not very cold in water.
After landing, the evaporated water vapor quickly takes away the heat, so it ......
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The reason is.
1. In the state of exercise in the water, the blood circulation is intensified, so that the body is hot, and people will not feel cold; Second, the temperature under the water is higher than the temperature on the surface of the water, and this is the reason why the water freezes on the surface of the water; 3. When you go ashore, there will be at least some breeze, blowing on your body, evaporating water droplets on your body, which is the heat dissipation process, so it will feel very cold.
In fact, if there is no wind, the cold feeling on the shore is not necessarily greater than in the water. Because the density of water is greater than that of air, the speed of heat transfer is greater than that of air, and it will be colder in water.
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Because the specific heat capacity of water is not the same as that of air, water heats up slowly and cools down slowly.
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The water on the body evaporates and absorbs heat.
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It's a pleasure to be able to ask your question, here are mine, I hope you can mine it, thank you! Before going swimming, you should do plenty of warm-up exercises on the road, such as shaking your hands, stomping your feet, etc.
Once in the water, you'll want to stay in the water for a while and get used to the temperature before you start swimming. When you start swimming, you should swim slowly, and then gradually increase the speed according to your physical condition. In my experience, the distance traveled is as follows:
2 x 25m, 3 x 100m, in a 200m mixed tour. Then you won't feel cold (some pools will put hot water). I used to be a swimmer in the Shanghai team, if you have any questions, you can add my number! ^_
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You start with a prep activity on the shore, then you stomp your feet into the water, and then start swimming without fear of the cold, and we often take swimming lessons in the winter, which works.
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1. Warm up carefully before going into the water.
2. Generally speaking, the physical education teacher will consider the water temperature and then decide to take swimming lessons, the water temperature is lower than the air temperature, and the body must be slightly colder. Therefore, it is important to warm up before entering the water, and try to pry more water on the side of the pool to let the body adjust to the water temperature. If the water temperature is below 24 degrees Celsius, it is recommended not to swim for too long, and it is important to swim ashore for a while to rest and regain body temperature.
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Rub cold water on your body before you go into the water, and rub it on your heart after you finish wiping it, so it looks like it's fine.
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HelloćHow not to be afraid of the cold? You can often take cold showers when you take a bath, and after a long time, you will gradually get used to it.
Everyone feels cold when they first enter the water, and after a while they don't feel it anymore, because if you are active in the water
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In fact, you can warm up by walking briskly in the water, of course, in a shallow pool. Eating some chocolate helps, I'm a professional swimmer, and I swim more than 400 meters in the water every day, since you say you can swim, freestyle will definitely be, right? Can you make it up if you swim 200 meters first?
Try it The number and speed of the swim are enough, and it will definitely not be cold.
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According to what you say, then you can only pour some cold water on yourself if you are fine, just get used to it.
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Usually do more land exercise activities, such as running, ball games and other sports, can improve the ability to withstand cold; Before swimming into the water, prepare for warm-up exercises, so that you don't feel too cold after entering the water; Don't stay in the water for too long, swim all the time so you don't feel cold.
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If the water is hot, it is uncomfortable to swim. It's a little cold, but if you can swim, it's not cold.
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Eat fast chocolate before going into the water and then do warm-up exercises, about 15 minutes of warm-up exercises, including running, jumping, etc., after entering the water, you should also move in the water first, first get your head wet and get a headache.
When you go ashore, you should first flush your body, apply soap or the like, and then wash your hair.
After drying, rub your own ** rub hard, it's best to rub some **moisturizer, right**, and then put on your clothes and take a deep breath, because the more shivering, the colder, the psychological + physical instinct reaction.
The winter swimming I mentioned above is also basically used, and chocolate is whatever you want to eat.
I've been doing winter swimming for a year.
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Winter swimming is good for the body, you have to persevere, learn from ***...
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The swimming pool is heated at 22 degrees.
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Hey, when the water is cold, you won't go down!
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Then you say you have a stomachache and can't swim!!
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This requires your own will.
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Warm up well and don't eat much cold.
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Exercise more after entering the water and flush hot water before swimming.
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