. If you want a small, flat waist like a marathon runner then you do a few minutes of abs everyday with no weight and high reps. If you want a really muscular core like a pro bodybuilder with big ab ridges and deep valleys, then workout with high weight and low rep and allow 5-7 days between workouts (morph zoom). Alles Klar? OK, so this particular ab workout is for people who want those big abs with deep valleys. Lets get started. This is going to be a killer 30min workout and were ...