Is it acidic? Even mildly so?
I wonder if it could be used as a battery electrolyte. The body would replenish it naturally. You can run a LCD clock off of a potatoe. Why not a person? Yeah, yeah, metal poisoning. But mayber there’s a way.
They did it in The Matrix.
I am of course talking of things I have no firm grasp of, but that’s kind of where most of my ideas start.