Reupload from my secondary channel.
Crouch Triggering (also called Body Hitbox Abuse) is a technique that allows us to activate triggers placed 18 units or less above player's head by exploiting faulty airborne crouching mechanics.
Note that the technical part of this video may not be an actual representation of what's happening in the game's code, but this theory has some reasons to be correct and it helps in visualising the glitch, as well as finding its utilization in the game.
![](https://i.ytimg.com/vi/hmqufqO0a4c/mqdefault.jpg)