(1) Be sure to pay attention to safety when swimming. Anyone with infectious diseases or open wounds should not take part in swimming, and women should not swim during menstruation.
(2) It is not advisable to go swimming immediately after meals, drinking or sweating after strenuous exercise. (3) Make full preparations before swimming, including unarmed exercises, imitation exercises and exercises to lengthen muscle ligaments.
(4) After strenuous swimming, you should relax in the water and adjust your breathing before going out. However, if dizziness, nausea, chills or cramps occur during swimming, you should get out of the water in time.
(5) It is best to take a shower or dry your body in time after swimming, and pay attention to dressing to keep warm.
(6) When swimming in a natural bathing beach, it is best to walk with others and pay attention to choosing a place with clean water quality. Pay attention to the depth and velocity of water. Don't swim in waters with mud, rocks, stumps, rapids, whirlpools, overgrown weeds, serious pollution and frequent ships.
Who is not suitable for winter swimming? People with severe heart disease, hypertension, hepatitis, nephritis and gastric ulcer are not suitable for winter swimming. In the case of physical discomfort, winter swimming may aggravate the condition.
Patients with otitis media can't swim, so as to avoid water entering the ear and not being easily discharged, leading to perforation of the middle ear. Wear earplugs when swimming after otitis media is cured, and don't let water into your ears.
Also, for everyone's health, people with infectious skin diseases and people with any infectious diseases are not suitable for swimming. This is to stop the spread of infectious diseases. The research shows that there are three kinds of people who are not suitable for winter swimming: teenagers below 16 and elderly people over 70 years old, who are not suitable for winter swimming because of their special physical conditions; Mental patients are not suitable for winter swimming because of lack of self-control ability; In addition, after examination by doctors, people suffering from serious organic diseases such as heart disease, coronary heart disease, tuberculosis, hepatitis, stomach disease and respiratory diseases are not suitable for winter swimming.
Preparatory activities are as follows:
(1) Get enough exercise to raise your body temperature, but don't cause fatigue.
(2) Preparatory activities should include general and special activities, but activities with maximum intensity should be avoided.
(3) The intensity and time of warm-up activities should vary from person to person, from sports to sports, with different requirements.
(4) Reduce the intensity of warm-up activities from 10 before exercise to 15 minutes, and finish the warm-up activities 5 minutes ago. Avoid diving
1, gradually entering the water is the need for the body to adapt to objective conditions. Practice has proved that many people have cramps, dizziness and sudden increase in heart rate. When swimming, these are all related to sudden entry into the water. The human body needs a transition from static to strenuous exercise to adapt all parts of the body to the needs of exercise. For example, in sports competitions, athletes should do warm-up activities before participating in the competition, so that their physical function and mental state are in a state of preparation. Gradually entering the water during winter swimming is the body's excessive adaptation to winter swimming conditions.
2, sudden water intake, easy to induce disease. Because the body suddenly enters the water under the temperature difference of too low water temperature, the stimulation of water will be more intense, and the body has no time to prepare, so it is difficult to accept too strong stimulation, which will easily lead to cardiovascular diseases and lead to life-threatening.
3, unclear observation, easy to delay the rescue. When swimming in the water in winter, it is the time when the body is prone to problems due to strong stimulation. Slow down the groundwater, others can see the physical reaction of people who enter the water, and once they need help, they can implement it quickly. If you dive, your body suddenly enters the water. If you feel unwell, have an accident and need help, it is not easy for people on the shore to see it, which delays the rescue opportunity.
4. It's cold and easy to get hurt. It is freezing in winter, and the ground near the swimming pool often freezes, and the ground slips and falls easily. When diving, it is often easy to lose the center of gravity, or fall, or there is a deviation when diving. If you jump into the water and collide with a swimmer, you are more likely to have an accident. 5, freezing in water, easy to scratch the skin. Winter swimming often needs to open the ice surface, so the water surface of winter swimming is usually not wide and not suitable for diving. Moreover, there are often small pieces of ice in the water that are broken but not completely fished out. The edges of these small pieces of ice are sharp. These ice cubes float in the water, and people often can't see them clearly because of their transparency. In winter swimming, people are often scratched by ice edges because they swim fast. Encountered ice while diving. Because your body enters the water with great movement and high speed, it is very easy to scratch your skin when you touch the ice edge.
6, underwater foreign bodies, easy to cause accidents. In those years when we were swimming, there was an accident. A swimmer's diving head hit a stone at the bottom of the water and died. They are all experienced swimmers. They usually swim well, but the accident lies in carelessness. As the saying goes, "Anyone who drowns can swim." The reason is that people are familiar with or proficient in something, so they are careless and lax in thinking, which leads to a very bad situation. On the contrary, if you are not familiar with or proficient in something, you will do it very carefully, so that it is not easy to make mistakes. Someone once advised them not to dive, but they didn't listen, which caused bad consequences. Where you can dive, the water should have a certain depth. If diving on the lower shore, the water depth should not be less than 2.5 meters. If you dive on a higher shore, the water depth should be more than 3 meters. And such deep water is not suitable for winter swimming. In addition, there should be no foreign bodies suitable for diving in the water, such as stones, dirt, weeds, ropes, etc. Divers should also have certain skills, otherwise they are prone to danger. Swimming is for fitness. Isn't it counterproductive to have an accident? In order to avoid accidents, it is best not to dive. In winter swimming, the launching action is milder and the safety factor is greater.