Have you ever noticed that dances have the same structure as an atom. As you move to the center of the dance you will witness the dense nucleus which is nearly impossible to pass through.
Also in nature this nucleus is surrounded by sub atomic partices called electrons,the electrons closest to the center have the most pulling force on other electons, or in other words they are the most attractive,
it is the same with dances, as you move a way from the center things start to get ugly,
these outside electrons are also quite eratic and can easily move from one atom to another,
in much the same way girls on the outer ring of dances are very eratic, and one can usually witnesses random limb movements