Jiu-Jitsu

I have started taking a Jiu-Jitsu class. The class is informal - meaning no belts or testing or anything like that. Mostly learning moves for about 45 minutes and then 45 minutes of grappling. It is Brazilian Jiu-jitsu which is a submission techniques ground fiting martial art. That is about all I know, and I may have some of the details off. So far, I really enjoy the grappling and it is great exercise.