No two people are alike and neither are the workout routines that they use to improve their abs. You have to find the workout routines for abs that suit you the best. Nevertheless, it is highly advisable to apply ab workout routines that train your abdominal muscles and trunk in the best manner available, this can be achieved by doing specific exercises that are based on rotation. The exercises that are based on rotation know how to go in multiple directions and it is these multiple directions that work not only your abs but your entire body. Rotation-based workout routines for abs that suit you the best are those that create motion from side to side, front to back, and in rotational pattern.
It is wisest to get into training with a pattern that is rotational in description. The biggest reason being that a lot of the activity that we do with our trunks is rotationally-based anyhow. If you employ the help of a standing cable machine to help you with ab routine workouts. It will assist you in the training for the rotational pattern by using dynamic chop and lift patterns that aid in learning rotation-base exercises. This is just only one idea of many and workout routines for abs can be as limitless as is one's imagination.