What is the effect of drinking light salt water after high temperature operation or strenuous exercise in summer?

Generally speaking, in the case of sweating more, especially when engaged in strenuous exercise in summer, you should drink some light salt water appropriately. In summer, when the temperature is high and the humidity is high, the human body will emit a lot of heat energy in time through perspiration to keep the body temperature relatively stable. When the body sweats a lot, it will take away a lot of inorganic salts, such as sodium, potassium and magnesium. According to measurement, running a marathon takes away 30 grams of sodium chloride with sweat. However, a person's daily intake of sodium chloride from food is only 10 ~ 15g, which will inevitably lead to salt deficiency in the body, fatigue and weakness, and even muscle spasms or cramps. Therefore, it is necessary to drink some light salt water when engaging in strenuous exercise in summer. Exercise under the conditions of not too much intensity, not too long time and not too high ambient temperature will generate less heat in the body and will not produce a lot of perspiration and inorganic salt loss. Neither salt water nor sugar water is needed at this time. If it is a long-term exercise, such as running a marathon, long-distance running by bike, etc. And your body consumes a lot of energy, so you should drink some sugar water or sugar salt water properly. As for general physical exercise, there is no need to drink sugar water. As for food, tofu, dried tofu and all kinds of bean products, as well as fresh fruits, melons and fruits and all kinds of vegetables are most suitable for eating after work and exercise. These are all good alkaline foods. Kelp is called "the crown of alkaline food". In addition, stir-fry sesame seeds and soybeans, add ginger and a little salt, and brew with boiling water to quench your thirst. Sesame, soybean and ginger are all good alkaline foods, and it is increasingly accepted that drinking water is also beneficial to health, which can reduce the acidity in the blood and eliminate fatigue. When I say drinking water, I don't mean drinking water when I am thirsty, but setting up a scientific concept of drinking water. Many old people have a good habit of getting up in the morning to exercise. Morning is indeed a good time to exercise, but I advise you not to get up too early, because four or five o'clock in the morning is the lowest level of basic metabolism in the human body. At this time, exercise is not only difficult to mobilize the positive factors of the body, but also easy to induce diseases. Don't go out too fast after getting up, because after a night's sleep and rest, the body loses a lot of water due to breathing, urination and evaporation of the skin, resulting in insufficient blood volume, increased blood viscosity and stagnant microcirculation. In this state, exercise can easily induce cardiovascular and cerebrovascular diseases, especially patients with hypertension and heart disease. Drinking water in the morning can change these unfavorable factors. At this time, the gastrointestinal tract of human body is in an emptying state, and drinking water can be quickly absorbed and infiltrated into cell tissues, so that the body can replenish sufficient water, blood circulation returns to normal, microcirculation is unobstructed, liver and kidney function metabolism is promoted, and garbage in the body is removed, thereby improving the disease resistance of the body and greatly reducing the incidence of cardiovascular and cerebrovascular diseases. The method of drinking water is simple. Drink 500 to 1000 ml of fresh warm water after getting up every morning. It doesn't matter if you can't drink 500 to 1000 ml of water at first. Slowly, start with 200 ml, gradually adapt and then increase until the body needs 500 to 1000 ml. Drink water slowly to avoid abdominal distension. Because people's gastrointestinal peristalsis is very slow when they sleep, and they are still in a state of dressing, it is necessary to give the stomach a process of adapting to exercise. Exercise should not be too much after drinking water. We should choose the amount of exercise and the way of exercise according to our age and our own situation. Generally speaking, we don't advocate sweating. It is advisable to sweat slightly.