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The Isometric Stomach Flattener: Sit up tall and straight in your chair. Breathe in deep and suck in your stomach as hard as you can. Now tense your stomach hard, as though bracing for a punch ? still keeping it sucked in. You feel that tightness, a slight quiver in the muscles? Good, that?s the start. Breathe out tightly making an "ssssssss" sound. You?ll feel your abs getting tighter.
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