I recently signed up for an ECQC (extreme close quarters) class from Shivworks. I'm really excited, and its only about a month away. Other than up my Cardio, any advice from people who have taken similar classes? or any suggestions on things to bring that aren't on the required list? I look at these classes as an investment, so anything I can take in with me that will help me get more out of the class would be greatly appreciated!