Text Neck
text neckとは言い得て妙な感じがします。これはどういう意味なのでしょうか。potterくん，どうぞ。（KAwada）
Seven Ways to Prevent ‘Text Neck’
The number of smartphone users worldwide is expected to surpass 2 billion next year. For doctors, that means 2 billion people susceptible to having pains in the neck—literally. There’s growing concern in the medical community that prolonged periods of looking down at smartphones can increase stress on the cervical spine, a condition colloquially referred to as “text neck.”
The physiology goes like this: the human head weighs between 10 and 12 pounds when it’s in a neutral position. But that weight increases to some 27 pounds when the head is tilted downwards at a 15-degree angle, 40 pounds at 30 degrees, and 60 pounds at 60 degrees, according to a study by New York-based spine surgeon Kenneth Hansraj. This is no problem when sending a simple text. But two to four hours a day reading and texting on smartphones, tablets and laptops? The gravitational pull puts undue stress on the spine.
