>>56122965Exactly. The whole shrinking thing is dumb and doesn't make sense. And despite what certain people say, it is not canon, that is if it's literal shrinking. Well, for the main games and the anime, which are the canon that I'm talking about.
To be more specific, it depends specifically what is meant by "shrink". If people say that Pokémon are literally having their physical bodies uniformly shrunk and are just physically sitting there when inside their ball, then that is wrong. Instead, what the evidence suggests, is that a Pokémon's body is turned into some sort of concentrated mass or energy.
Also, this whole body conversion thing is not something any Pokémon can do whenever they want. It appears to only be as a result of a ball being used on a Pokémon and maybe also when a Pokémon Faints in the main games.