Why are swimmers cold in winter?

Why can't swimmers be bad in winter? Scientific winter swimming is not bad. Whether they can bear it or not is only related to people's will, so it is also called the sport of the brave. The harm of cold is nothing more than two aspects. It's not bad to talk about why swimmers are cold in winter. And matters needing attention.

Why are swimmers cold in winter? Why are swimmers not afraid of the cold in winter?

Practice all the year round, and if you say it is not objective, you will get used to it. Say it is incredible, its exercise effect must be obvious, otherwise not so many people will go swimming in the ice. In fact, winter swimmers are usually as warm as ordinary people. After you have tried it, you will know what it feels like to swim in winter without being afraid of cold, so there is only one word left "cool"! Winter swimmers usually start activities in summer or autumn, and persist until the end of the cold winter. The water temperature changes from 15 degrees to 1 degrees for at least three or four months. If we put aside the factors of courage and perseverance, anyone can do this process!

Why are swimmers cold in winter?

Scientific winter swimming will not be cold, and whether it can withstand it is only related to people's will, so it is also called the sport of the brave. The harm of cold is nothing more than two aspects. First, frostbite, no matter how low the water temperature is, is above zero. Blood circulation is fast when swimming, and you won't get frostbite after swimming for several to ten minutes. Second, when the body's temperature drops to 32 degrees, it begins to be confused and disordered, which is absolutely dangerous. No matter how strong the will is, this is the limit.

People are worried that they will catch a cold when they are cold. There is no direct relationship between cold and not cold. It's just that people with poor immunity have lower immunity when they have a cold and are more likely to be infected with cold germs. Beginners of winter swimming will gradually adapt to the water temperature and improve their immunity from summer, which will create a cold body. Of course, you can't come unless you are afraid of the cold. We must swim scientifically in winter.

First of all, physical examination, hypertension, heart disease, etc. are not suitable for winter swimming; Secondly, warm up fully before entering the water, stretch your limbs, avoid muscle rigidity and sudden large-scale exercise strain, change your clothes and wash them with frozen water, let your body cool down and then enter the pool; The third is to master the scale and control the swimming time according to the water temperature. Generally, the water temperature 14 degree swimming 14 minutes is appropriate, and the water temperature decreases by one minute every time it decreases; Finally, it must be remembered that you can't take a hot bath because of hypothermia during winter swimming. Stimulating limbs with hot water can cause a lot of frozen blood to flow back to the heart, which can be fatal. Therefore, as long as you master scientific methods, winter swimming is not bad.

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 under 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.

What are the benefits of winter swimming?

1, winter swimming is cold before hot, bitter before sweet, which can sharpen the will, cultivate the temperament and enhance the ability to resist the cold, thus reducing the occurrence of colds.

2. Swimming cold therapy in winter can improve local and systemic vasomotor function, and the blood vessels contract first and then expand, thus promoting blood vessel microcirculation. Repeated vascular movements make blood vessels more elastic and prevent vascular sclerosis. It can effectively enhance the beating ability of the heart, make it have a powerful heart pumping function, and can violently wash away cholesterol-like spots deposited on the inner wall of blood vessels, prevent harmful substances from accumulating in blood vessels, prevent and treat hypertension and lower blood pressure, and reduce the probability of thrombosis and coronary heart disease.

3. Winter swimming greatly enhances the body's immune function and can prevent tumors or cancer lesions caused by gene mutation during cell regeneration. After suffering from tumor or cancer, it also plays a role in inhibiting and killing tumor and cancer cells because of physical enhancement.

4, winter swimming to keep out the cold, consume more energy, prevent fat from accumulating in the body and lead to high triglycerides, which is a good way to lose weight.

5. Take a deep breath in cold water in winter swimming, mix in more oxygen than usual, and spit out a lot of carbon dioxide, which can enhance vital capacity and play a good role in preventing and treating pharyngitis, bronchial and lung diseases.

6, can enhance cardiopulmonary function. After winter swimming, myocardial contractility is enhanced, blood circulation is accelerated, and the functions of various systems of the body are well promoted and developed.

7. Winter swimming can promote endocrine. After the human body is strongly stimulated by cold, it is immediately reflected to the pituitary gland, adrenal gland, pancreas, gonad and other glands through the nervous system, and each gland secretes corresponding hormones, which are called neurohumors. Then the physiological functions of the corresponding organs are adjusted through the corresponding nerve centers to establish a new balance. It stands to reason that with the increase of age, the secretory function of each gland should have decreased, but experiments have proved that the secretion of thyroid hormone in winter swimmers has increased. Testosterone levels have also increased.

8. Through winter swimming exercise, I generally feel psychologically satisfied. Through the relief brought by intense cold stimulation, the constant psychological and spiritual charging of winter swimming will definitely have a positive impact on the physiological functions of various systems of the body. In this way, a higher level of physical and mental balance has produced a good cycle. It is not difficult to understand why winter swimmers ask for trouble and insist on winter swimming for many years or even for life.

9, skin care. When people swim, the water washes away the skin, sweat glands and fat glands, which plays a good massage role, promotes blood circulation and makes the skin smooth and elastic. In addition, when exercising in water, it greatly reduces the irritation of salt in sweat to the skin.

What are the disadvantages of winter swimming?

1, vulnerable to cold. People always think that people who take part in winter swimming are not afraid of the cold and will not catch a cold. This is a misunderstanding. Winter storage is our people's experience of prolonging life for thousands of years, while winter swimming is just the opposite. Throughout the winter, the whole body is exposed to cold wind and cold water, and you will catch a cold if you are not careful. Many young people, relying on their strong bodies, swim a lot like summer, and they are unaware of it after swimming.

In fact, the cold has long been forced into the body, and this cold has sneaked into the human body unconsciously. And when the winter swimming is cold, the whole body is cold, which is much more serious than the common cold. In the winter swimming team, there are often more middle-aged and elderly people than young people. This is because middle-aged and elderly people are more cautious, swim less and are not easy to catch a cold, so they can persist for a long time and persevere.

2, easy to stroke. There are still many hypertensive patients in the winter swimming team. Why do so many hypertensive patients come for winter swimming? Mainly in winter swimming, there is a saying called "cardiovascular gymnastics". In other words, human blood vessels will suddenly contract after being stimulated by cold water, thus enhancing the blood flow speed, accelerating blood circulation and making the whole body blood flow more unobstructed. At the same time, blood vessels often contract, just like doing gymnastics, making blood vessels more elastic when they are closed and released.

Think about it, such a person will still have high blood pressure, and high blood pressure will heal itself. The fact is not so idealistic. There have been two cases of stroke and even death in different degrees, which deserves the vigilance of winter swimmers! Analyzing these cases, we will find that these people all suffer from high blood pressure and want to lower their blood pressure in winter swimming, but their blood pressure has not decreased, but has increased, and they have symptoms of stroke.

3. It's not safe. Winter swimming is different from summer swimming, and there are no life-saving measures. There are relatively few people attending, so there are often only a few people in the whole swimming pool. If there is cramp, stroke or exhaustion, people will cry every day.

So you should have the ability to save yourself, don't cramp, don't choke on water, don't bump, etc. And learn to control yourself. You should pay attention to your health every day. When dizziness, high blood pressure, bradycardia, numbness of hands and feet, don't swim for too long, especially when cold forcibly enters the body, leading to colds and strokes.

Why are winter swimmers not bad? In recent years, more and more winter swimmers have jumped into the cold water to show their "heroic qualities". However, Zhang Baocang, director of the office of the Winter Swimming Committee of the Chinese Swimming Association, said that although winter swimming has many benefits, it is not suitable for everyone. Zhang Baocang also said: "The key is to grasp the' degree' and try to be' not excessive'."

Warm-up activities for winter swimming

(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.

In recent years, some people in the medical field use winter swimming as a means to treat chronic diseases, such as sedation, analgesia, antitussive, diuresis and sweating control. , and has been used to treat emphysema, coronary heart disease, hypertension, neurasthenia and other diseases, and achieved remarkable results. In addition, some experts who study human body shape point out that swimming can also help people to correct some bad body shapes, such as humpback and scoliosis, so as to shape a fit body.

Misunderstanding of winter swimming

Misunderstanding 1. Winter swimming cures all diseases.

Winter swimming is essentially a sport. Some people want to treat diseases through winter swimming, so they must be careful. Winter swimming can strengthen the body, improve human immunity and promote the gradual relief and improvement of some functional diseases. Although it is often reported that some people insist on winter swimming to cure the disease, the domestic research in this field is still very limited, and individual cases and experiences are not universal.

Myth 2: everyone is suitable.

Winter swimming is not for everyone. If you have serious diseases, such as hypertension, coronary heart disease, cerebrovascular disease, kidney disease, liver disease, mental disorder and diabetes, allergic constitution, congenital heart disease and epilepsy, as well as people with trauma or inflammation and alcoholics, it is not suitable to participate in winter swimming, otherwise it may lead to sudden illness or harm to the body. Because children are in the period of physical development, they should pay more attention to the right amount of winter swimming and must be supervised by adults. In addition, even if people with good health want to swim in winter, there should be a step-by-step process, preferably from autumn, so that the body can gradually adapt.

Myth 3: The longer you swim, the better.

The time of winter swimming depends on the temperature, water temperature and people's physique. If you swim in the water for too long, on the one hand, you will often feel numb and trembling after landing, which is very easy to damage some organs; On the other hand, excessive stimulation is likely to cause cortical system failure and damage health.

Myth 4: Take a hot bath after winter swimming.

Pay attention to keep warm after winter swimming, and exercise immediately to restore body temperature. After landing, dry your body with a dry towel until it turns red. Then, get dressed quickly and jog or jump in place until the body temperature basically recovers. Don't go into a hot room after a winter swim. Get warm or take a hot bath immediately.

Myth 5: Exercise after meals is effective.

Some winter swimmers think that swimming after eating in winter is more energetic and has more calories. Actually, this is unscientific. Digestive organs are very sensitive to temperature. Thermal stimulation can excite digestive organs, while cold stimulation can inhibit digestive organs. Winter swimming immediately after meals affects digestion and absorption, which is easy to cause digestive system diseases such as acute gastritis. In winter swimming before meals, there is no new fatty acid in fat cells, so it is easier to "mobilize" them and convert them into heat for consumption through exercise, with the best effect.