This equation states a relationship between the energy and mass of a body at rest. We can deduce that a body, despite being at rest, has energy in the form of mass. The total energy of a body consists of the energy that comes from its motion and the one that corresponds to its mass ( E² = m²c⁴ + (mv)²c²) ... and this leads us to think that we are all basically the same (some with a little more of v, others with a little more than m ...).
It's not hard for us to put on Novantia's shoes, a company specializing in rehabilitation, and create a system to show their way of understanding not only their activity, but their reality.
In the end, we are all E.