A body triangle (also known as a figure-four body lock) is a technique in grappling that is employed from the back, back mount, or less frequently from the closed guard, whose purpose is to securely lock the practitioner’s opponent in position. This technique is very similar to one of the four forbidden techniques in judo, the do-jime or trunk hold. The main characteristic of the body triangle that distinguishes it from hooks is the commitment to the position, i.e. once executed the position is difficult to escape. However, it also severely limits the offensive options of the practitioner employing it.
