@Redice
While theoretically possible, the body uses a really REALLY
REALLY REALLY small amount of electricity to function.
Its going to be super fucking hard to not burn the nerves from overload or make the muscle cramp uncontrollably.
So the controll needed to do that would be on a ungodly diffucult level.
Controlling the blood on the other hand is way easier.
You might not be able to control the movements off somebody like in Avatar the last airbender.
But you 100% will be able to stun them by preventing them from moving or faint as it takes a surprisingly small changes to fuck up the body.