Quote:
Originally Posted by habunow1
Not wanting to piss anyone off but strong abs and lower back help with running but sprint is legs and cardio exercise. The only way to get a flat stomach is to strengthen upper/lower abs, obliques and most important reduce your body fat to a % to a point which would allow them to start to show.
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You yourself just stated how sprints will help flatten your abs, cardio. As stated before sprints are considered a form of HIIT when done as Bonnie has said, HIIT is a form of cardio and a whole body workout not just legs. Burning cals along with proper diet is what will lower body fat percentages to reveal abs. Also sprints although a whole body exercise does target your legs which are also the biggest muscles in your body, it takes more cals to sustain muscle than fat so in turn also burns more cals.Working abs in themselves, which are small muscles does very little to reveal them. You can have outragesly strong abs and never see them without low enough bgody fat percentages. I don't think anyone implied that sprints is the only or best way but it is an effective way along with various other tactics.