When people do sports in the hot season, especially when they are engaged in long-distance hiking in the south, due to muscle tension, a large amount of metabolic heat is discharged from the body, causing the body temperature to rise. In order to maintain a normal body temperature , which will dissipate excess heat from the body through perspiration. According to scientific research, after 2 hours of intense exercise, the human body will lose 2.5 liters of water. When the human body sweats a lot and loses too much water and salt, the blood will become thicker, the stickiness will increase, the pulse will increase, and the body temperature will increase. When the height increases, the body will experience dry mouth, thirst, weakness, and even muscle cramps, metabolic disorders, etc. At this time, it is necessary to add water and salt appropriately. How to rehydrate?
1. It should be taken in small amount and several times, 100 ml each time is appropriate. Drinking too much water will cause a large amount of water to enter the blood, which will increase the blood volume, increase the burden on the heart, reduce the osmotic pressure of the human body, affect the water metabolism, and slow down the absorption of water. , destroy the balance of salt in the blood, it is easy to increase the body’s fatigue, causing muscle cramps.
2. The composition of water can be supplemented by yourself. Generally, water drinks can be prepared according to the following formula before exercise: per 1000 ml of cold boiled water, add 4 grams of salt, 100 grams of glucose and 150 ml of orange juice. In this way, not only water is added, but also salt, glucose and vitamins are added to balance the metabolism of water and salt in the body.
3. During or after strenuous exercise, it is not advisable to drink a lot of cold drinks, as the gastrointestinal blood vessels will be stimulated by ice cold, which will cause sudden contraction of blood vessels, stomach cramps, and stomach pain. If this is the case for a long time, it will lead to chronic gastric diseases; During strenuous exercise, the capillaries of the throat are in a dilated state and are suddenly stimulated by cold, which is easy to cause inflammation of the throat and symptoms of coughing and gargling.
