Texting and Mobile Usage Does to Your Spine: In November of 2014, Dr. Kenneth Hansraj performed a study on the impact of good posture on the pressures seen by the neck called assessment of stresses in the cervical spine caused by posture and position of the head. Essentially he found that when the head is straight up in good posture then it weighs 10 pounds. In the posture of 60 degrees forwards the head weighs 60 pounds.