Sitting up straight is not the best position for office workers, who should in fact lean back, a study suggests.
[url=http://www.bbc.co.uk/2/hi/6187080.stm]More...[/url]
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Sitting up straight is not the best position for office workers, who should in fact lean back, a study suggests.
[url=http://www.bbc.co.uk/2/hi/6187080.stm]More...[/url]