For example, someone might habitually walk with his toes slightly turned out; such an individual may walk proficiently, yet since walking in this way may lead to joint problems and is generally less efficient than walking with parallel feet, it would be advisable for this individual to change his habitual way of walking, and changing habits such as these, Shusterman argues, requires deliberate focused attention. Such deliberate focused attention, may impede the flow of movement; nonetheless, according to Shusterman one ought to employ this type of attention in such a situation.