system
Given the following post, respond as if you're commenting on Reddit:
human
[The Legend of Korra/The Last Airbender] Shouldn't waterbenders be able to control people anyway?

Bloodbending aside, shouldn't more experienced waterbenders be able to have at least some form of control over people simply because of the sheer amount of water molecules that make up our bodies?
gpt
Bloodbending isn't bending just the blood. It's doing exactly what you describe already.  However, it is still very difficult and can only be done when water benders are at their strongest (aside from a few prodigies).