How can I stand on the ground? EM or/and Pauli?

Question

There is this famous example about the order difference between gravitational force and EM force. All the gravitational force of Earth is just countered by the electromagnetic force between the electrons on the surface of my feet and the ground. But also wave-function of electrons(fermions) do not overlap each other due to Pauli exclusion principle. So which one is the true reason of me not flopping inside the earth forever? Is it only one of them(my guess is Pauli exclusion) or is it both?

Answer 1

I can't see why the Pauli exclusion principle is relevant to the basic theory of gravity. Gravity is a side effect of mass. Can you post some kind of reference that relates to your question.