stomach crunch

let me see if i undestand you right: you want to flatten your lower stomach, and you beleive you will do it by doing crunches. from your description it looks that your BF% is low enough and is not issue here.

i suppose it is some kind of postural deficit (maybe your pelvis is tilted forward). you can improve your poisture with proper excercise, imho crunches alone will not do it. if you can borrow  The Egoscue Method of Health Through Motion book in your local library, i'm sure you would find a proper sequence of excercises for your specific issue.

here's Egoscue Method book link

http://www.therapyzone.com/product_info.php?cPath=39&products_id=51&osCsid=6f8d1a67fb30e678c043878cf4fa454f

i hope this helps.

Hi, Greg. It looks to me that everyone overlooked that you already have low BF%. Is it true?

I still suspect that may be your poisture, not BF. More specifically, position of your pelvis bones. (I am not affiliate of Egoscue Method in any way, maybe it would be helpful if you just consider this option. But it is not quick fix.)

Good luck!

_{Okay, there's no such thing as "spot reduction" of fat, but there is such a thing as exercises that work on specific muscles.}

_{FWIW, for lower abs I occasionally do hanging leg raises (on that vertical contraption in the gym where you rest your elbows on pads and your legs hang), scissor kicks (I rest my hands under my tailbone, keep my head up, and do a horizontal scissor kick for 60 beats, rest, repeat), curl-ups and V-ups (the V-ups are harder, but if they ever get easy try holding yourself in the "up" V position for a count of ten, yeah back when i was a kickboxer one of my dear teachers tortured us with those), and, well, I don't even know what to call one:  lying on back back on an incline bench, with my head on the upslope and my feet pointing down, I hold the grips with my hands and SLOWLY brring my legs up into the yoga "plow" position, hold for a few seconds, then slowly  bring them beck.  It's hard, but to me feels realy good.  3 reps is enough.} 

_{The caveat of course is that I personally have NO visible abdominal muscles.  Yeah, um, now that i'm not kickboxing any more, i don't do ANY core work regularly.  And my BF is... significantly higher than yours.   So... good luck!}