According to the statistics of forensic medical examination, when hanging, the consciousness is lost after 15-20 seconds, death occurs in 1-3 minutes. Depends on the way of hanging (knot on the side or back, rope thickness, human condition, etc.) Self-help is categorically impossible, so those who want to play are at great risk. Convulsive movements occur already in an unconscious state. If you are lucky enough to be pulled out of the loop in this short period of time from hanging to death, then the survivor will experience all the delights of cerebral circulation disorders, from minor health problems to the state of a vegetable forever.
There were two professors: Nicolae Minovichi from Romania and the German Fleischman. They are famous for experimenting with hanging. This was the beginning of the 20th century. I'll give you a quote. sudmed.ru
These professors were hanged over themselves, and their assistants after a certain number of seconds removed them from the loop. Both bold experimenters conveyed their feelings while in the loop, and their sensations almost completely coincided.
It turns out that they did not immediately lose consciousness and could, being in the loop, be aware of what was happening. At the very first moment after tightening the loop, they felt a sharp pain in the throat, a strange heaviness in the head, "as if filled with lead", fiery circles appeared in front of their eyes, a sort of crackling of drums was heard in their ears, attacks of melancholy, despair appeared, the most difficult general condition .
Both experimenters immediately had a desire to throw off the noose from the neck, to stop the experiment, but they could not move a finger, could not utter the slightest movement. The fact is that even with insignificant compression of the neck veins by the loop, the outflow of blood from the brain immediately becomes sharply difficult or stops, while through the deep-lying, not yet compressed arteries, blood quickly enters the cerebral vessels, especially from behind, that is, in the cerebellar region where the traffic control centers are located. Here, blood pressure rises sharply, and a person loses the ability to coordinate his movements, and therefore, is not able to free himself from the noose imposed on the neck. Consciousness is lost later (by the end of the first or at the beginning of the second minute from the moment of hanging).
The fact is that in a loop a person does not die of suffocation, as movies and TV shows show, then that a person weighs a few seconds and is supposedly saved. This is all wrong. Death occurs in a split second due to the fact that the NECK BREAK and the spinal cord is injured!