Most fitness experts agree that your abdominals help to support and protect your spine, and thus, they must never be fatigued before doing any non ab exercises such as, chins, rows, deadlifts and squatting movements. These "experts" state that when your abs are fatigued, you are at a greater risk of acquiring a back injury. Based on this, the entire fitness industry insists that you must only do your ab training at the end of your workout.
The problem is that this...