First of all, dizziness, weakness and trance
Lying in bed can make people think aimlessly. After getting up, their heads are so heavy that they can do nothing. According to the analysis, this is because the brain is also needed in bed, which consumes a lot of oxygen, resulting in temporary "malnutrition" of brain tissue.
Second, destroy the biological clock effect.
Let a person on the day shift take a hormone test. The results show that the concentrations of many hormones secreted by hypothalamus and pituitary gland are relatively high from morning to night, but low from night to dawn. People who work at night are the opposite. Therefore, if you live a regular life and sleep late every weekend or holiday, you will disturb the timing of the biological clock in your body, suffer from insomnia at night, but fidget and fatigue during the day.
Third, it affects gastrointestinal function.
Generally speaking, the dinner of the previous day was basically digested around 7 am. At this time, the brain will send out a "hunger message." If you lie in bed until 12 and don't eat breakfast, your gastrointestinal tract is prone to gastritis, ulcers and other diseases due to frequent hunger and peristalsis.