[van_exel_fan]

If fish is playing 57KJ and shoving 572 flop then he can easily have like KQJX or K9XX or 89XX w/ 2 hearts. If you are not a nit and you are thinking of folding AK due to no redraws then maybe nit will fold when you shove and you can go heads up as a big favorite against the fish's range. It is also slightly significant that you have 2 of the A's as it makes two other AK's out there very unlikely.