In my white 2 on route 11 there's this bird keeper named magnolia, and she's right b4 you get to fight Verizon; anyways if you battle her, and then leave the route she'll be ready to battle again like you never battled her b4. I'm not complaining, it's good, helps my Pokemon train ^_^ but if every bw2 is like this then I'm sure not a lot of ppl know about it.
(I haven't beat the game yet)