Constant phone use can cause severe spinal problems: study

[ahlam1399]

http://i.ytimg.com/vi/0yBhtEaZQfE/default.jpg (http://www.youtube.com/watch?v=0yBhtEaZQfE&feature=youtube_gdata)
Constant phone use can cause severe spinal problems: study (http://www.youtube.com/watch?v=0yBhtEaZQfE&feature=youtube_gdata)

Sat, **v 22: The average adult head weighs about 10 pounds, but according to a new study the cranium becomes significantly heavier the more you bend your neck. So looking down at your phone...
From:Global News (http://www.youtube.com/channel/UChLtXXpo4Ge1ReTEboVvTDg)
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أكثر... (http://www.youtube.com/watch?v=0yBhtEaZQfE&feature=youtube_gdata)