Those who read a lot on their smartphone or tablet, will very likely suffer pain in the neck area. This phenomenon even became a name in Germany: “Handynacken”.
A US study demonstrated that an approximately four to six-pound adult head at an angle of approximately 15 degrees puts an additional 13 kilos force to the spine, when reading emails on mobile phone.
The human cervical spine is not made for this long-term stress. There is a great force on the muscles due to the significant downward sloping angle in the neck area. Also, the entire shoulder-arm system suffers.
This can get can even worse when the first cervical vertebra (atlas) is not in its healthy position. It can than cause dizziness and / or headaches.