It requires a further awakening of the individual's bodily awareness, a kind of learning that occurs at the brain-level. That topic is covered later in this essay. Tensions maintained in working positions add to stress, soreness, and stagnation. Muscles held tight guarding old injuries carry soreness long after injured tissue has healed, which is why injuries so commonly persist for long periods. The residual, heightened muscular tensions of guarding cause the pain.
Accumulated tension produces muscular soreness and sets the stage for muscle spasms.
Unresolved, past injuries predispose a person to further injury. The fact that people guard themselves after injury demonstrates that they instinctually recognize that they are in jeopardy of further injury. To improve awareness of body position and movement has been the typical biomechanical approach of ergonomic solutions. However, habitual ways of moving and working work against new ways of moving and working. People tend to return, unconsciously, to old ways of working.