Hazard: Different personal constitutions will lead to different diseases.
Matters needing attention in taking a cold bath .....
Take a bath every day in summer. Many people take a cold bath to save trouble, and some people take a cold bath to keep fit. Cold water bath has many functions. For skin, it can make blood vessels contract first and then expand, improve blood circulation efficiency, enhance skin nutrition, make subcutaneous tissue accumulate certain fat, and make skin look young and elastic, and it is not easy to suffer from skin diseases. Cold water bath can exercise skin temperature receptors and eliminate abnormal sweating. For the whole body, cold water bath can improve the body's rapid adaptability to cold, and it is not easy to suffer from cold-induced diseases such as cold, bronchitis, tonsillitis, pneumonia and allergic rhinitis. Cold water bath promotes blood circulation between skin and viscera. The expansion and contraction of blood vessels exercise the elasticity of blood vessels, which can prevent arteriosclerosis and its diseases, such as coronary heart disease and hypertension. Cold water bath increases the blood flow of visceral blood vessels, including digestive tract blood vessels, thus strengthening the function of digestive system. When cooling with a cold water bath, it is not advisable to suddenly immerse in cold water at first. It is best to splash some cold water on your body with your hands or shower head, or wet your hands and feet with cold water first, and then wet your chest and back with a towel. Rub your body for a while, cold water will soak you through and dry quickly until your skin turns red, which means the effect is good. If you feel cold, you should shorten the shower time or raise the water temperature.
Precautions for taking a cold bath;
1. Women shouldn't take cold showers.
When taking a cold bath, because the water temperature is too low, the human body will feel cold and produce a series of stress reactions, such as rapid heartbeat, high blood pressure, muscle contraction and nervous tension. It can not only eliminate fatigue, but also easily cause colds and should be avoided as much as possible. Because of its special physiological reasons, especially when female friends are in menstruation, lactation and pregnancy, the stimulation of cold water will cause endocrine disorders, amenorrhea and abdominal pain, and many bacteria will also enter the vagina to cause gynecological diseases such as vaginitis, which will seriously affect women's future pregnancy and health.
2. People with coronary heart disease should not take a cold bath! !
Cold water bath can promote the blood circulation of blood vessels in the whole body and enhance the opening and closing function of skin pores. Long-term adherence to cold water bath can improve the cold resistance of the body, thus helping to prevent diseases such as colds.
Cold bath is really good for healthy people, but it is not suitable for patients with coronary heart disease. Because cold water stimulation can induce angina pectoris, even acute myocardial infarction or sudden death. According to clinical research, the peak of acute myocardial infarction is from 1 1 to April of the following year, and the main reasons may be related to cold stimulation and sudden climate change. Because the patient is stimulated by cold, the α adrenergic receptor of the body is excited, the arterioles of the whole body are contracted, the ejection resistance of the heart is increased, and the oxygen consumption of the myocardium is increased.
Coronary artery disease in patients with coronary heart disease, coronary blood flow can not be increased accordingly, which eventually leads to myocardial ischemia and angina pectoris.
Therefore, patients with coronary heart disease should pay special attention to cold and warmth in cold season, and avoid taking a cold bath to avoid an acute attack of coronary heart disease.
3. Don't take a cold bath in after making love.
In the process of "sharing the same bed", the blood circulation of the whole body is accelerated, which is manifested by increased blood pressure, accelerated heartbeat, enhanced gastrointestinal peristalsis, flushing of the skin, opening of sweat gland pores and sweating. Therefore, after * * is over, you will feel irritable and thirsty. Some people are eager to drink cold drinks or take a cold bath to sweat, which is not good for their health.
Because during sexual life, the blood vessels in the gastrointestinal tract are dilated, drinking cold drinks will suddenly damage the gastrointestinal mucosa and even cause gastrointestinal discomfort or colic before the congestion of the gastrointestinal mucosa returns to normal. Similarly, in the process of * *, the skin blood vessels of the whole body are also congested and dilated, and the pores of sweat glands are in an open state of perspiration. At this time, if the skin is blown by cool wind or bathed in cold water, the blood vessels of the skin will suddenly contract, so that a large amount of blood will return to the heart and increase the burden on the heart; At the same time, it will also cause the sweat gland drainage hole to suddenly close, so that sweat is stored in the sweat gland, which is harmful to health.
If you feel thirsty, you might as well drink a little warm water first. After sexual intercourse 1 hour or so, after the blood circulation of various organs of the body returns to normal, it is advisable to take a cold bath.
4. Take a cold shower carefully after sweating in summer.
After sweating in summer, you can't take a cold bath immediately. This is because the temperature is high in summer and the body generates more heat during exercise. Sweat evaporation and skin vasodilation are important ways to dissipate heat.
At the end of exercise, the human body is still in a state of vigorous metabolism, increased heat production and vasodilation of the skin. At this time, if the skin is immediately stimulated by cold water, the blood vessels of the skin will contract through nerve reflex, which will hinder perspiration and heat dissipation, but it will make heat dissipation difficult and body temperature rise. At the same time, the decrease of skin blood flow suddenly increases the blood flow back to the heart, which will increase the burden on the heart.
There is also the body from the hot environment into the cold environment, too late to adapt to the adjustment, often easy to catch a cold or cause gastrointestinal cramps. Muscle fatigue and tension increase after exercise, and then cold stimulation may also cause cramps. Drink some salty boiled water after sweating in summer, then rest for about 1 hour, do some preparatory activities and take a cold bath. If conditions permit, it is best to take a warm bath.
Dr. Wang Zhi from the Scientific Research Institute of the State General Administration of Sport said that some people took a cold bath from head to toe after exercise in order to have a good time. They felt relaxed at that time, but they are likely to feel weak afterwards, and some people even have headaches. This is because when the body sweats a lot, the capillaries are dilated. If you take a cold bath, the blood vessels contract sharply, and the heat in the body is restrained by external forces, so it cannot be emitted for a while. Moreover, intracranial arteries are rich and sensitive to external stimuli. In hot season, the head is particularly prone to sweating after exercise. If you wash your hair with cold water, it may cause abnormal intracranial vascular function, leading to dizziness, headache, blackness at the moment and even vomiting. It can be seen that it is dangerous and undesirable to take a cold bath to quickly cool down, especially for people who are not used to taking a cold bath. When their bodies suddenly get cold, they often cause all kinds of discomfort. I suggest that you don't try to feel refreshed for a while, leaving hidden dangers of disease.
Dr. Wang Zhi suggested that for most people who are not used to taking a cold bath at ordinary times, it is best to take a hot bath after summer exercise to cool down. Bathing with hot water can wash away sweat, keep hair follicles and skin clean, ventilate the skin, accelerate blood circulation of skin and muscle vessels, dilate capillaries, help the body expel heat, promote metabolism, nourish all parts of the skin, and accelerate the removal of metabolites such as lactic acid. After the blockage on the skin surface and sweat pores is removed, the skin can sweat smoothly, and the smooth "breathing" of the skin is beneficial to the regulation of body temperature. In addition, a hot bath at a proper temperature can soothe the nerves, relax the muscle tissue of the whole body, and even play a certain role in calming, relieving itching, relieving pain and resisting allergy. Although you will sweat more when it is hot in summer, you may feel hotter after taking a hot bath, but you will feel cool and comfortable after a short rest and enjoy that refreshing feeling.
The temperature of hot water bath should not be too high, and warm water of 35 ~ 40℃ is generally suitable. The number of times of washing should not be too much, because too many times will wash off all the oil normally secreted on the skin surface and the protective flora normally parasitic on the skin surface, which will easily cause skin itching and other diseases, and the skin's resistance will be weakened, but it will easily get sick.
5. Take a cold shower carefully after work.
After sweating in summer, you can't take a cold bath immediately. This is because at the end of labor, the human body is still in a state of vigorous metabolism, increased thermogenesis and vasodilation of the skin. If you take a cold bath immediately, your skin will be stimulated by cold water, which will cause the skin blood vessels to contract. In this way, sweating and heat dissipation will be blocked, but it will make heat dissipation difficult and body temperature rise. At the same time, the decrease of skin blood flow suddenly increases the blood flow back to the heart, which will increase the burden on the heart. Muscle fatigue and tension increase after work, and then cold stimulation may also cause cramps, colds or gastrointestinal spasms.
6. Patients with hypertension: When the skin comes into contact with cold water, the blood vessels contract sharply, and a large amount of blood rushes back to the internal organs, making the already high blood pressure higher. In severe cases, it can cause cerebrovascular rupture, bleeding, stroke, coma and even death. People with slightly elevated blood pressure can take a cold bath, but only slowly, that is, sprinkle some cold water first and rub some parts of the body instead of "cold treatment" at once.
7. Patients with sciatica and arthritis: After the nerves catch cold, the condition will be more severe.
8. People who are allergic to cold: such as patients with cold urticaria and itchy skin, do not take a cold bath during the onset. If you want to exercise your skin when you don't have an attack, it is feasible to gradually cool down, that is, take a hot bath at first, gradually switch to a warm bath, and then gradually lower the water temperature until the water temperature is quite low but you don't get sick.