I could be wrong, but isn't structure a necessity?
/ˈstrʌk tʃər/ Show Spelled [struhk-cher] Show IPA noun, verb, struc·tured, struc·tur·ing.
mode of building, construction, or organization; arrangement of parts, elements, or constituents: a pyramidal structure.
anything composed of parts arranged together in some way; an organization.
Because without structure, the body would just be a noodle. So we have to have some way to hold the body together (structure) in order to direct force to and from the ground. Am I incorrect in this assumption?