"Due to the many modern conveniences in our society, people are moving less and less, and finding themselves sitting at desks or in cars for large portions of their day. Over a period of time, the spine loses the integrity of its "S" curve, and molds into a "C" curve to adapt to its primary stimulus sitting. The shoulders begin to round forward, and the head begins to jut forward. The psoas (the major hip stabilizing muscle that attaches the leg, pelvis, and spine) often becomes shortened and atrophied and unable to perform its proper function. Furthermore, due to lack of equal bilateral stimulus, the musculoskeletal structure often becomes misaligned from the right to the left sides of the body. For instance, one shoulder might become elevated, one hip rotated forward, or one foot externally rotated."