Body Triangle

Last updated: May 27, 2026

What is the body triangle?

The body triangle, sometimes called the figure-four body lock, is one of the most controlling positions in grappling. Back mount is where it lives. From there, the attacker sits behind the opponent with both legs around the waist, then tucks one foot behind the opposite knee to form the “4” shape that gives the figure-four hold its name. According to Wikipedia, the same configuration also appears occasionally from guard/" data-glossary-id="4533">closed guard, though that variation is much less common.

What sets the body triangle apart from hooks is how committed the position becomes once locked. Hooks rely on each foot independently. The body triangle binds the two legs into a single closed loop around the opponent, which is harder to break but also restricts the attacker’s own mobility. The position is widely used in Brazilian jiu-jitsu and submission grappling, and it has become a recognisable tool in modern MMA back-control sequences.

How the body triangle works

Once the figure-four is locked, the attacker squeezes the knees inward and flares the locking heel. The torso compresses against this closed loop. According to the Wikipedia entry on the body triangle, the pressure restricts normal breathing and accelerates fatigue, and in extreme cases, it can cause compressive asphyxia.

Where the legs sit on the opponent’s body changes the position’s character. Locked low across the hips, it is a pure control hold that frees the attacker’s hands to hunt for a choke. Locked higher, across the diaphragm just below the rib cage, it adds breathing-restriction pressure. Evolve MMA’s coaching article identifies the higher placement, with the shin across the diaphragm, as the more aggressive variation.

Body triangle vs. hooks

Most newer grapplers learn hooks first, and the two methods of back control are often discussed side by side. The differences matter both for control and for scoring.

Feature	Hooks	Body triangle
Leg configuration	Both feet hooked inside opponent’s thighs, working independently	Legs locked in a figure-four around opponent’s torso
Mobility for attacker	High; can transition to armbar, triangle choke, bow and arrow	Low; legs are committed to the lock
Resistance to escape	Moderate; opponent can pry one hook at a time	Strong; opponent must defeat the entire closed loop
Scoring (IBJJF rules)	Awards back-mount points when two hooks plus body control are established	Does not award back-mount points on its own
Common context	Default back-control method, taught early	Used to secure long-duration control, often paired with hooks

Many top grapplers establish hooks first to claim back-mount points, then transition into a body triangle for longer-duration control. As Jiu Jitsu Legacy points out, points for back mount are awarded only for leg hooks under most jiu-jitsu federation rules, so the body triangle is not a substitute for hooks in sport BJJ. It is a tool layered on top of them.

The body triangle in MMA

The body triangle has become a staple of MMA back control. From back mount, a fighter on top can lock the position to immobilise the opponent’s hips, freeing the hands to either hunt the rear naked choke or land short strikes from above. Wikipedia describes the body triangle as a stable platform from which to strike the head, though strikes to the back of the head remain illegal under the Unified Rules of MMA.

The position is sometimes called the “backpack” body triangle when applied as the attacker rides the opponent’s back during scrambles and stand-ups. A Sportskeeda report covering UFC Vegas 76 noted that Aljamain Sterling helped popularise the term during his bantamweight title run, and that Grant Dawson used the same style to win a unanimous decision on the card. The body triangle is permitted under the Unified Rules of MMA. The related judo technique, do-jime (trunk hold), is one of four techniques traditionally banned in judo, according to the Wikipedia entry on the position.

Risks and considerations

Most of the documented injuries from the body triangle involve the ribs. San Diego Sports Rehab lists body triangles among the most common causes of rib injuries in jiu-jitsu, alongside takedowns and knee-on-belly. Momentum WOD, a sports medicine resource for grapplers, notes that the 11th and 12th ribs are particularly vulnerable because they are floating ribs, attached at only one end, and a poorly executed body triangle can apply enough compression to fracture them.

The position carries downsides for the attacker too. Once the figure-four is locked, the legs are committed, which limits transitions to other submissions. If the locking foot drops to the mat during a defender’s roll, the attacker becomes exposed to leg locks, a risk Evolve MMA’s coaching article highlights when discussing top-side versus bottom-side variations.

Frequently Asked Questions

Is the body triangle legal in MMA?

Yes. The body triangle is permitted under the Unified Rules of MMA used by the UFC and most major promotions. Striking from the position is allowed, though strikes to the back of the head remain illegal.

Does the body triangle score points in BJJ?

No. Under IBJJF rules, back-mount points are awarded for two hooks plus upper-body control. A body triangle on its own does not score, which is why competitors typically establish hooks first and then layer the body triangle for control.

Can the body triangle be a submission on its own?

Occasionally. Wikipedia notes that a tightly applied body triangle can cause an opponent to submit due to rib pressure or compressive asphyxia, but this is uncommon against conditioned grapplers. The position sets up the rear naked choke far more often than it finishes a fight on its own.

Why is do-jime banned in judo if the body triangle is allowed elsewhere?

Do-jime, the judo name for a trunk-squeezing hold close to the body triangle, is one of four techniques traditionally forbidden in judo due to the risk it poses to the ribs and spine. The same mechanic is allowed in BJJ, submission grappling, and MMA, where the rule sets weigh that risk differently.

Who is best suited to using the body triangle?

The position tends to favour lankier grapplers, whose longer legs make the figure-four easier to close around the opponent’s torso. Shorter grapplers can still apply it effectively, and coaching resources for the position note that with proper setup, less-flexible practitioners can use it against larger opponents.

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Sources

1. Wikipedia. “Body triangle (grappling).” Accessed May 2026.
2. Wikipedia. “Hooks (grappling).” Accessed May 2026.
3. Jiu Jitsu Legacy. “The Ultimate BJJ Body Triangle Guide.” Updated May 2023.
4. Evolve MMA Daily. “3 Ways To Secure A Stronger Body Triangle In BJJ.” June 2024.
5. NAGA Fighter. “What is Body Triangle as a Dominant BJJ Position.” February 2025.
6. BJJ Fanatics. “Escaping the Body Triangle.” February 2019.
7. Sportskeeda. “Aljamain Sterling reacts to undefeated Grant Dawson using his ‘backpack’ style.” 2023.
8. Momentum WOD. “Injured ribs training Jiu Jitsu? The Complete Guide for the 5 Most Common BJJ Rib Injuries.”
9. San Diego Sports Rehab. “Returning to Jiu-Jitsu Training After A Rib Injury.”

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