There is such a belief that if you press your finger on a biologically active point between the upper lip and nose, then the person quickly comes to his senses after fainting or can even prevent this fainting.
In most cases, this kind of nonsense is found not in medicine, but in veterinary medicine. There you can experiment, because the ponies will not sue you. Well, that is, almost all references to this method are associated with veterinarians.
Still isolated cases come across in military medicine. There, too, patients are treated more simply.
In a peaceful life among ordinary bipeds, they do nothing of the kind.
Well, we must pay tribute to the veterinarians who are engaged in science. They tested this trick with modern statistical methods and found no effect. Respect to them! That is, they literally stimulated the cherished point or point with an electric current in a completely different place and did not find any difference in blood pressure and heart function. At the pony.
Who helps to put pressure on this place
I think that putting pressure on this place to prevent fainting can help anyone. And it does not matter at all - under the nose you will press or will press on the next wall or even on the kitchen refrigerator. The point of the method is that it makes you tense and increases your blood pressure. This is called an anti-gravity maneuver or counterpressure maneuver.
That is, wherever you press, it is more likely to work. It's hard to miss.
It also seems to me that the point in the tender place between the upper lip and the nose was chosen specifically so that strangers would not stick their fingers there. Because pressure from another person will not work the maneuver. You have to push yourself. It is clear that people are reluctant to allow passers-by with unwashed hands to press them under their noses. So the way is witty.
And you yourself did not press anything?