[Answer] Why do you have the urge to jump when you are standing on a high place?

I remember jumping from the second floor several times when I was naughty as a child (because I just wanted to jump), but I was not injured. Watch parkour.

I dare not bungee jump now, but if you put me on the platform, I will definitely have the impulse to jump.

————————

Many students say this is acrophobia.

I checked wiki and Baidu, and the following is the content of wiki:

Fear of heights, also known as acrophobia, is a kind of phobia, which refers to fear of being at a height above a certain level. Symptoms are panic when you are at a height, breathing faster, unable to react normally to things around you, and staying at a height. In addition to visual effects, the experience of falling from a height (such as roller coaster) can also cause acrophobia.

A few people stand two floors above the ground, and when they look down, they will feel scared. Most people are more than four stories high and have a sense of fear. In addition, usually after reaching the height of more than ten stories, people will no longer have acrophobia.

————————

It doesn't seem to be acrophobia. Who can add something? I feel that my reaction is "excited, leaning towards the edge or approaching, and my reason repeatedly tells me not to jump", compared with "falling into panic, breathing faster, unable to react normally to things around me, and staying at a high place"

Answer—

An explanation of the solution you can think of (inspired by Baidu Encyclopedia's explanation of vertigo symptoms of acrophobia);

Scientists point out that people rely on "visual flow field" to control their posture and movement. When people stand on a straight road and the end of the road disappears before our eyes, then people are not so afraid, because people are at right angles to this visual flow field. However, when people stand on the edge of a building and look down, although it is endless, the judgment ability of the brain will be troubled, because the relationship between people and the visual flow field is not at right angles, but extends to 180 degrees, and the brain feels that gravity attracts the body to infinity. "

This is a bit reliable. My "jumping" reaction may be that my brain received this visual stimulus from the outside world and was directly driven by it, without forming a fear reaction.

Attach a video of a cold joke group: