Whats the point?
On average, the adult head weighs about 10-12lbs (or 4-5kg) when it is in an upright and neutral position. However, the head becomes heavier the more you bend your neck, increasing the pressure that is placed on the neck itself. By bending you neck at 60 degrees, the weight being transferred through the neck is 60lbs (27kg) which is more than the weight of your average 7 year old.
Whilst holding your head at 60degrees may be a little on the side of extreme and we may only catch ourselves in this position on occasions, tilting our head a small 15 degrees can over double the weight through the neck at 27lbs (12kg). At 30 degrees the weight can be 40lbs (18kgs), and at 45 degrees; 49lbs (22kg).
When it comes to correct posture, not only does it look better, but it also has an improvement on your health. Other studies suggest that correct posture elevates the levels of testosterone and serotonin in the body, whilst reducing the levels of the stress hormone cortisol.
As a result of this posture, there is a range of signs and symptoms you may feel as a result of the soft tissues (muscles, tendons, ligaments, etc.) being under strain. They can include:
Prevention is key.
While it is nearly impossible to avoid the technologies that cause these issues, you should try to make an effort to look at your phone with a neutral spine and to avoid spending hours each day hunched over. Some tips to consider include:
Whilst this 'condition' is easily avoidable and can be self managed, sometimes seeking a healthcare professional may help you though posture advice, tips on specific neck and back exercises, or manual therapy including massage and mobilizations.
Hansraj, K. K. (2014). Assessment of stresses in the cervical spine caused by posture and position of the head. Surg Technol Int, 25(25), 277-9.