system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is it that standing your ground works so well against charging animals. Even though they should just plow through you?

An example I would like to present to you fine ladies and gentlemen of the inter-web is as follows : a moose charging a human being. Said human plants its feet firmly in the ground and starts waving its arms and screaming. Now I find it hard to believe that this 800+lbs behemoth stop its charge. And think to its self " Great Scott ! Look at this hairless ape ! It was moving just a second ago through my woods and has become a loud immovable object !!  WITCHCRAFT !!!! " then gallops off into the woods scared for its life.If some one could explain this it would be appreciated !
gpt
Most predators are used to animals fleeing from them. An animal standing its ground is alien and intimidating to them. 

Note: Some animals don't give two sh!ts if you stand your ground: A mama grizzly, for example.