How soon could you flatten your stomach if you did 1000 crunches a day and ate a well-balanced diet?

Very soon. 2-3 weeks.

1000 crunches a day is a lot. If you can do that at all you are in good shape anyway.

yeah seriously, if you can do 1000 good on ya! you don't need to be doing them! i can barely get 400 done on a good day and I've been exercising every day for 3 months

i can do 1,000 crunches a day and I'm only 16.the results are fast, last, and make you feel great!it's not that hard once you get used to it.

ya crunches are easy for me now, i stopped counting cause once i hit 1000 it's pointless, try using different teqniques and add weights if your body weight isn't enough.