Power Ergonomics distinguishes between two basic states of action or use - unified (unified postures and unified movements) and disrupted.  Unified action is the natural order or state of the body. Disrupted action is what we get when we fail to understand how to use the body naturally. Power Ergonomics is about the restoration of this natural state. Many ailments and disorders related to the musculoskeletal system can be traced directly to the disruption caused by poor use.