Choreutic, introduction:

"movement is, so to speak, living architecture- living in the sense of changing emplacements as well as changing cohesion. this architecture is created by human movements and is made up of pathways tracing shapes in space, and these we may call 'trace-forms'. a building can hold together only if its parts have definite proportions which provide a certain balance in the midst of the continual vibrations and the movements taking place in the material of which it is constructed. the structure of a building must endure shocks from alien sources, for instance, by the passing traffic, or by the jumping of lively inhabitants. the living architecture composed of the trace-forms of human movements has to endure other disequilibrating influences as they come from within the structure itself and not from without. the living building of trace-forms which a moving body creates is bound to certain spatial relationships. such relationships exist between the single parts of the sequence. without a natural order within the sequence, movement becomes unreal and dream-like." 

-rudolf laban