the two plans are mutually exclusive; implementing one will automatically rule out the other
They are not mutually exclusive, because they share many of the same points. As Mike outlined.
The body is the same, they are both models describing/suggesting proper body use.
If we are talking about how the body physically works, we are talking about the body as a machine.
There are also aspects of Mental and Spiritual use, but as far as I can see we don't need to get into those just yet, because we can't even agree on body use yet.