I used to live in Maryland but moved a few months ago. Scot Mertz was my sensai back when he was affiliated with Shotokan and the JKA. I started learning some Saishu Ryu and was able to keep my Shotokan rank. I will probably be back in Maryland soon.
im not really sure how, but i DO know that you dont want to keep hitting yourself in the same area. this is a common problem for muay tai boxers because alot of them damage nerves in their shins and forearms from hitting them so frequently and sometimes get blood clots. sorry i couldnt be of more assistance