Standard Ab Crunch Rest the upper half of your body on an exercise ball. Tighten your entire core and place your hands lightly behind your head. Crunch your abs while looking forward and keeping your neck relaxed. ONLY your ab muscles should be contracting. You will notice very quickly that you are using your entire body core for this exercise, which is why it is so effective. You can even work at focusing on particular stomach muscles (obliques, for instance) while you are crunching. Even yo..

Standard Ab Crunch Rest the upper half of your body on an exercise ball. Tighten your entire core and place your hands lightly behind your head. Crunch your abs while looking forward and keeping your neck relaxed. ONLY your ab muscles should be contracting. You will notice very quickly that you are using your entire body core for this exercise, which is why it is so effective. You can even work at focusing on particular stomach muscles (obliques, for instance) while you are crunching. Even yo..

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