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. As you breathe out, crunch your abs really hard, rotating your pelvis upwards and your rid cage inwards. Breathe all the way out. Relax.
See also: Abs isometrics exercise instructions, abs isometrics
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