She also stresses the importance of a stand that keeps the instrument at the proper height, since good posture is essential to proper technique.

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Since keeping the ball stable requires abdominal strength and concentration, distracted workers may not maintain good posture or end up rolling onto the floor.

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The wedges increased the forward tilt of the pelvis, which reduced pressure on the lower lumbar discs and the muscular effort required to maintain good posture, researchers said.

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Ms. Easley added one more essential accessory: good posture.

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Her posture was too good to hide it past the third month.

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Clearly separated from the tourist costume of T-shirts, baseball caps and running shoes, a local aristocratic lady also dressed in black, with a gold-handled onyx cane, good jewelry and noble upright posture, entered her apartment building.

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That's characteristic of the sniping posture of many defensive elders who haven't put their gifts to good use in the guise of cultural critic.

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