There is an old school technique called the lung compression which was made famous by Royler Gracie. The technique consists of holding your opponent in side control and putting your hand underneath their back and driving your weight against their chest. You can also make a fist for added pressure and pain. Royler never taught this on camera but it’s been taught by word of mouth.
Here are 3 videos teaching this technique (They don’t show the painful version with the fist though)
Steve Hall is a second degree Royce Gracie black belt who runs Fight To Win BJJ in Charlotte North Carolina. Here he shows how to hold and generate an amazing amount of weight after establishing side control using this technique:
Steven Henshall, Top UK BJJ athlete and head instructor of Fight Lab BJJ in Newton Heath is giving a tutorial on a lung compression based submission known as the constrictor:
Keenan Cornelius shows another version which adds a shoulder choke:
Sloth Jiu-Jitsu: you can be slow and unathletic and still kick butt in Jiu-Jitsu.
