Powering electrical divices with human body fuel?

[sigex]

Hi, I've been thinking. The fuel our bodies use to power ourselves, has anybody ever tried to use this electrical current to power electrical devices?

I'm not talking about the way the body sends singles via electrical currents. I'm talking about the fuel that is used to carry out the movement.

Is this fuel in the electrical signal our brain gives of and that is carried through our cells in to the muscle control system?

Please add your views.

In case your confused, this is what I'm suggesting / asking.

out-sourcing human body fuel to supply an electrical current usable by electrical devices, such as wrist watches.

[mith]

put two wires into your skin and see if you draw a current lol. On a more serious note, we don't use electrical fuel. Last I checked, we use chemical energy.

[TheVirus]

put two wires into your skin and see if you draw a current lol.

Darn it! I was just gonna say that!

[david23]

it's not hard to build a power generator connected to a treadmill in those rat cages. And then have your pets power your room for you.
Youtube has a lot of videos of making electrical generators by the way.