The multiple muscles in the neck are perhaps the most important muscles in our bodies.  Maintaining our heads, home to nearly all the body's primary sensory receptors, in equilibrium is the responsibility of the muscles  of the neck.  Employees in an office environment are often required to maintain their heads facing a particular direction for extended periods of time.  Hours spent staring at a stationary computer screen, for example, can cause the tightening of specific muscles, which limits the free range of motion utilized the remainder of the day.  Neck massage is designed to lengthen the necessary muscles, allowing for unhindered mobility.