The negative effects of misuse of modern devices such as smartphones and tablets have increased in recent times as a result of constant access to the daily media and playing board games (The Games), so the tablet has become a tool used in many stages of the educational stages of students from children and adolescents and a basic means Used to follow educational curricula and complete final exams on it,
In addition to their increasing practice of individual and group activities in which they
use these devices, which resulted in neck pain and damage caused by the long period of bending looking down and bending the head forward, which naturally affected the curvature of the spine, especially the cervical and upper trapezius muscles working on it. The study conducted by the American surgeon Kenneth Hans raj on the forces that affect the spine when looking at smartphones for a long time has shown that the head of an adult who weighs between four to five kg affects the spine and neck with a force of about 13 kg When the head is tilted forward at an angle of about 15 degrees, indicating that the greater the degree of curvature, the greater the burden on the vertebrae and the greater the angle of inclination on the neck approximately 60 degrees, and thus affects the neck and back with a force of 27 kg