Today I did some open mat with an Orange belt (Judo). It really opens up your eyes to how effective BJJ is with someone who has been using it for over 6 months. I am a beginner's beginner. I started about 3 weeks ago. He ran a clinic on me. Within 10 seconds, he had me tapping each time. The first time, I got his back(which I am sure he let me do), and he put me right back to guard pretty quickly.. He put me in 2 Kimuras, 1 Americana, 1 Triangle, and 1 weird armbar from side mount, where he just used his legs to put pressure on my elbow. This guy outweighed me by about 30 pounds and was pure muscle too. It was a good experience. It motivated me to get off my ass and go to more classes, that is for sure.