Yoga and the Body as Energy in Light Body

In some of my instruments that i make, i use the body as a resister in the circuit. So using the electricity of your own body in the moment, because it changes throughout the day. I'm interested in im a lot of, like thinking of the body as energy, and how to kind of make it physical and make it am. How can something so simple produce amplification, like magnets and wire? It's like magic, but it's science.