Advice from someone who has been studying spine biomechanics for a while: http://www.humankinetics.com/excerpts/excerpts/strategies-to-make-seated-work-less-dem

Advice from someone who has been studying spine biomechanics for a while: http://www.humankinetics.com/excerpts/excerpts/strategies-to-make-seated-work-less-demanding-on-the-back http://www.humankinetics.com/excerpts/excerpts/strategies-to...