This invention relates to a chair to be used by workers such as programmers who spend {HEAD ~ long periods} of {TAIL ~ time} in chairs and particularly to a chair that provides knee restraints together with lower back restraint that relieve strain on the back 
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This invention relates to a chair to be used by workers such as programmers who spend { HEAD ~ long periods } of { TAIL ~ time } in chairs and particularly to a chair that provides knee restraints together with lower back restraint that relieve strain on the back
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