It is very hot now. Why do people who go to work feel tired after getting up every morning?

Although the sunshine is strong in summer, there are too many opportunities to lose it: air conditioning, cold drinks, cold fruits and vegetables, hair blowing, sweating (injury to body fluids and gas consumption), lack of sleep, poor appetite, excessive physical strength and so on. These will damage the spirit of the sun and reduce the function of the human body. Therefore, in summer, many people will feel tired, lack sleep, easily catch a cold, get gastroenteritis, even heatstroke and stroke.

Second:

Sweating in summer is easy to cause imbalance of body fluid metabolism. The balance between water and electrolyte is an important factor to keep the internal environment relatively constant. If you sweat a lot, you will lose too much water, sodium chloride and water-soluble vitamins (mainly vitamin B 1 and C), which will lead to imbalance of water and salt metabolism, acid-base balance and osmotic pressure. Due to a lot of perspiration and chloride ion loss, the chloride ion reserve necessary for the formation of gastric acid in the blood will be reduced, resulting in a decrease in the acidity of gastric juice; Drinking plenty of water because of thirst will dilute stomach acid. These changes will directly or indirectly affect the digestive function and cause loss of appetite. In addition, due to the high temperature, the blood in the body is mostly concentrated on the body surface, which is easy to cause digestive tract ischemia, inhibit saliva secretion, reduce amylase activity and gastric juice secretion, and lead to loss of appetite and digestive dysfunction.