Can anyone suggest a kickboxing club in the Sunderland/Seaham area? I'm 48 and thinking of returning to martial arts but my flexibility is pretty terrible. Would this hold me back? I live in Seaham and there is the Ironfist kickboxing club but it looks like there are mostly children there. Also seen JC kickboxing and that also looks like a mostly kids club. I'd like to train to achieve a dream of getting a black belt so anyy help would be great.