I have rug burns on both of my elbows from the Cardio Abs workout yesterday. About half the time you have to lay in a half plank position, where you put a lot of pressure on your elbows. Well at the time I didn't really think anything of it. Intense sweating + on/off elbows over and over + berber carpet = OUCH! My suggestion would be to consider your surface, or get something to lay on.
