Video presentation: https://youtu.be/wubQBY6M7vw
Obtaining great abdominals is not only about training the abdominals. The Central Nervous System radiates out from the spinal column, located in the back region of the core/torso areas, which sends bio-electrical impulses necessary to stimulate and contract all of the muscles in and surrounding the midsection. Instead of focusing totally on the frontal abdominals, like so many do with over-emphasis on crunch-like or torso flexion motions, etc., it’s wise to focus on total midsection training, 360º, with first emphasis on the lower-middle back region which is a significant portion of the waistline. Once the lower back region; or posterior portion of the waistline is trained, then the applicant can (should) apply motions that target the sides (obliques) then continue to transition into the lower and upper abdominals.
There are a myriad of motions, routines, devices and systems designed to target the abs. So pick and choose which ones are best for you but always consider the back portion of your midsection even though it’s a long way from the frontal region, and mostly out of sight when looking into a mirror.
Wishing you great success! John Abdo