Like I mentioned previously, the significant majority of us practice Sport Jiu-Jitsu, and hey, there's nothing wrong with that! Heck, I only train Sport Jiu-Jitsu myself. Although, it does seem these days that we are losing the self defense side of Jiu-Jitsu, and I think it's good that Motion Training CO are trying to keep that side of Jiu-Jitsu alive by sharing these techniques.