Long night, there are always some rejoicing can not be missed, there are always some depression can not be relieved, there are always some movies must finish brushing, there are always a bunch of his comrades are still waiting online.
However, literally, it can be seen literally that staying up late is a harmful behavior and what specific injuries do it have?
Stay up late harm
Stay up all night "boil" what is it? Long stay up late, what will we lose?
1, the biological clock disorder
The hypothalamus, called the optic nerve of the suprachiasmatic nucleus (SCN), controls the circadian clock. The ganglion corrects the circadian clock by light, directing the body's movements and rest by hormone secretion.
Inverted black and white can easily disrupt the biological clock, the body's various metabolism, material synthesis and so will be affected in the short term naturally will not have any obvious symptoms, but long-term accumulation, you will find yourself more "older" than their peers.
2, loss of the brain
Sleep is an important process of brain self-repair, stay up late for a long time will not only affect the cognitive and emotional function of the brain, causing memory, decreased attention.
More seriously, staying up late for long periods of time leads to abnormal microglial activity in the brain. The primary role of microglia is to engulf metabolites and dead cell debris in the nervous system, but abnormally active microglia engulf Normal brain cells, the brain itself "eat" their own horror scenes.
This is also a major cause of dementia, so staying up late for long periods of time can lead to irreversible brain damage.
3, lose rationality
Staying up late leads to a "strike" in the cerebral cortex, and the cerebral cortex, especially the prefrontal cortex, is closely linked to self-awareness. So when the cerebral cortex "strikes" it is likely to lose control, become irritable and irrational (think of getting up in bed).
This is why police officers like to surprise prisoners in the night.
4, destroy the body
Night came, the biological clock told the body: the rest. So the body automatically reduce the central temperature, reduce the body's alertness and responsiveness, to help the body to sleep faster.
But we also have a hypothalamic-pituitary-adrenal (HPA) axis, which helps the body to enter combat status within a short period of time by secrete adrenaline and cortisol, which made humans escape the Beast many times Attack.
However, when we stayed up late, the hypothalamic-pituitary-adrenal (HPA) axis, which had been suppressed by the clock, became active again as it mistakenly thought we were in danger and began to secrete adrenaline and cortisol, causing the body Instantly full of combat effectiveness, which is the reason why the more stay up all night more spirit.
Unfortunately, these cortisol not only enhance local metabolism (get angry, Zhangdoxian), but also help the liver continue to make blood sugar into fat, and then remind the body need to add more food, and finally, a large number of adrenaline and cortisol will Cause high blood pressure and arrhythmia, which is the main cause of sudden death.
Late sleep late night okay?
Some people say that although I stay up late, but I can get up late, as long as the guarantee sleep 8 hours a day, is not it?
The answer is: No.
As I said earlier, the SCN corrects the circadian clock by light, that is, the human body actually has a "photo-sensitive switch."
When the light goes dark, SCN begins to direct the body to prepare for sleep, such as reducing body temperature, inhibiting the secretion of epinephrine and cortisol, etc .; when the light becomes brighter, SCN will gradually wake up the body, such as increasing body temperature , Increase the secretion of cortisol and so on.
1-2 hours before waking up, cortisol in the blood will gradually return to an increasing level, which is called cortisol awakening, which will make the body's various organizational systems gradually be stimulated, the body began to operate normally, the process Is everyone envy of "natural wake up."
However, if you choose to continue to sleep at this time, the already prepared body and the spirit of hope to continue to sleep will appear fierce contradictions, resulting in the body become confused, the body's hormone secretion will be re-upset, leading to more sleep more sleepy, malaise .
Some are clever and cheat the biological clock with curtains, blindfolds and the like, but without a change of light suddenly wakes up (opens the curtains and removes the blindfold) and the body is not adequately prepared, so there will be a short Time becomes trance, do not even know where they are ...
Do you want to stay up late?
There is a famous chicken soup that says: Dear, nothing in this world is important to let you go through the middle of the night and not sleep until twelve.
Staying up is like smoking, hurting your body does not appear immediately, even in a short time can make you feel more "cool." But everyone knows that this is a detrimental act. At the same time, it is also a very hard to get rid of behavior.
Some people laugh, what is hard to quit smoking? How many times a day
Stay up late is the same, whenever determined to "go to bed earlier tonight," there will always be some attractive things to jump out to lure you.
However, just like smoking for a long time, staying up late for a long time will surely hurt the body. Twenties may not feel it. However, when you are in your thirties and old and have a small family, and you most need to support the family burden, A sharp decline in physical condition, it is terrible.
In order to avoid this tragedy, please do not stay up late!
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