Sitting on the edge of your seat, 
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extend both legs and let your shoulders 
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rest against the back of your chair. 
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Keep your back flat and chest lifted. 
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Rest your hands on your seat at your 
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sides as you bring one knee at a time, 
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or both knees, toward your forehead 
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into an abdominal "crunch."
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Bring your forehead toward 
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your knees as you exhale. 
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Inhale as you release.
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Repeat 5 to 10 times.