Here's why:

* The human body uses chemical energy, not electrical energy in the traditional sense. Our cells use chemical reactions to produce and utilize energy. This energy is stored in molecules like ATP (adenosine triphosphate).

* Nerve impulses, which are electrical signals, are very small and localized. They don't travel through the body like electricity through wires.

* The human body is not a conductor of large amounts of electricity. We are mostly water, which is a good conductor, but our skin and internal organs provide some resistance.

In summary:

The human body is a complex biological system that uses chemical energy, not electrical energy in the way we think of it in terms of DC or AC power. The electrical signals within our body are very small and localized, and our body is not a good conductor of large amounts of electricity.