A nice article on what we are calling ‘text neck’, the position that everyone’s head is in reading their smartphones. And I would say that I see folks in a degree of this in the car behind the wheel.
Our head and neck segment at only a 15 degree angle will weigh about 27 pounds (see the drawing in the article to see all the permutations). One way to counter this is to remember that your spine should be long and relaxed, not short and compressed. Bringing the smartphone or book wo your head is there way to shift this bad habit that could lead to some deterioration of the spinal structure.
Washington Post article link: