This position causes the head to be carried by the neck instead of the spine, increasing the weight of the head on the neck by 300 percent. The rounding forward of the shoulders causes a stretch weakness of the posture muscles of the upper back, all the while holding the head upright. The load on these muscles is significantly increased while their strength is drastically reduced. This can lead to several chronic muscle problems in the upper back. Another important risk factor that is frequently overlooked is lack of upper extremity support.
Countless jobs call for arms being held up slightly all day, fighting gravity.
This is taxing work for the neck and shoulder muscles and exacerbates the existing stresses from forward head posture. About every 10 or 15 seconds, do something different - change positions. The human body was not meant to sit all day doing the same movement. Also change your work environment so your body is in a balanced position. Roughly half a million Americans reported suffering RSI in 1995.