Here's why:

* Kinetic energy is the energy of motion. When you run, your body is in motion, and therefore possesses kinetic energy.

* Potential energy is stored energy due to an object's position or state. While your body does have some potential energy due to its position relative to the Earth's gravitational field, this energy is not the primary factor in running.

In summary: Running is driven by the conversion of chemical energy (from food) into kinetic energy, allowing your body to move.