Brazilian jiu jitsu does make you stronger, but not in the way a barbell does. It builds a specific kind of strength: the ability to hold, squeeze, push, and resist force from unpredictable angles while another person tries to do the same to you. Experienced practitioners develop notably strong grips, resilient core muscles, and the ability to generate force in awkward positions that gym training rarely replicates.
The Type of Strength BJJ Builds
Most of the strength you develop on the mat is isometric, meaning your muscles are contracting hard without moving through a full range of motion. Think about squeezing someone’s collar, framing against their chest to create space, or locking your legs around their torso. Your muscles are working intensely, but they’re holding position rather than pumping through reps. This is fundamentally different from the concentric and eccentric contractions you get during a bench press or squat.
BJJ also develops what strength coaches call multiplanar and anti-rotational strength. In the gym, most lifts move in straight lines: up, down, forward, back. On the mat, force comes from every direction, and your body learns to resist rotation, absorb pressure, and redirect energy in ways a squat rack never demands. Your nervous system adapts to coordinate muscles more efficiently under these chaotic conditions, which is why longtime grapplers often feel disproportionately strong for their size.
Where You’ll Notice It Most
Grip strength is the most measurable change. Almost every technique in BJJ requires you to grab, control, and hold on to your training partner or their uniform. A study of experienced brown and black belt practitioners (averaging 11 years of training) found dominant handgrip strength of about 53 kilograms of force, with the non-dominant hand close behind at 50 kg. Experienced athletes consistently show higher isometric grip strength than beginners, and grip endurance (how long you can hang on) averaged around 30 seconds in testing, with some athletes lasting a full minute.
Your core gets a serious workout too, though the specific demands depend on your style. Practitioners who prefer the top position (passing guard, controlling from above) develop significant trunk extensor endurance. Their lower backs have to resist being pulled forward and folded over by the person on the bottom. Those who play guard (fighting from their back) develop more posterior chain flexibility, particularly through the hips, along with strong hip flexors and legs that can control and sweep an opponent.
Upper-limb isometric endurance, the ability to keep your arms working under load for extended periods, is another hallmark. Rolling for five or six minutes straight while constantly gripping, pushing, and pulling creates a sustained demand on your forearms, shoulders, and upper back that few other activities match.
How BJJ Strength Differs From Gym Strength
One of the most common surprises for people who are strong in the gym is discovering how different that strength feels on the mat. A person who can deadlift 400 pounds may struggle to escape from underneath a 160-pound purple belt. The reason is mechanical advantage. BJJ teaches you to use your strongest muscle groups against your opponent’s weakest ones. An armbar, for example, pits your entire hip and core structure against someone’s arm. No amount of bicep curls overcomes that leverage gap.
This also means BJJ develops a kind of applied, coordinated strength that traditional lifting doesn’t. Your nervous system learns to recruit the right muscles in the right sequence for scrambles, sweeps, and escapes. Experienced grapplers describe this as their body “just knowing” how to move under pressure. It’s a learned skill, built over years of repetition, not raw muscle output. Two people with identical muscle mass can feel completely different to grapple with depending on how well they coordinate that strength.
Where BJJ falls short compared to lifting is in building maximum strength and muscle size. The loads involved in grappling are significant but not progressive in the way a barbell program is. You won’t add five pounds to your squat every week from rolling. And while BJJ provides enough resistance to build some muscle, particularly in the upper back, forearms, and hips, it won’t produce the same hypertrophy as a dedicated resistance training program.
Power and Explosiveness
BJJ doesn’t just build static holding strength. It also develops lower-body power, though the degree depends on experience level. In vertical jump testing, a common measure of explosive leg power, novice practitioners (white to blue belt) averaged about 30 centimeters, while experienced athletes (purple belt and above) averaged around 34 cm. High-level competitors reached 41 cm, comparable to recreational athletes in many other sports. These gains likely come from the explosive hip movements central to sweeps, escapes, and scrambles.
Anaerobic power output in elite BJJ athletes has been measured at roughly 10 to 11.5 watts per kilogram of body weight during sprint cycling tests. That puts them in a solid athletic range, reflecting the burst-and-recover nature of grappling: short explosions of effort followed by brief periods of lower intensity.
What BJJ Won’t Do for Strength
If your goal is to get as strong as possible in specific lifts, or to build significant muscle mass, BJJ alone won’t get you there. It doesn’t provide enough progressive overload to drive continuous strength gains past a certain point. A beginner who starts training will likely notice real strength improvements in the first several months, especially in their grip, core, and upper back. But those gains plateau as your body adapts to the demands of rolling.
BJJ also doesn’t load the body symmetrically. You’ll likely develop stronger muscles on your dominant side, and certain movement patterns (pulling, squeezing) get trained far more than others (pressing, overhead work). Over time, these imbalances can become noticeable if grappling is your only form of physical training.
Supplementing BJJ With Lifting
Most serious practitioners, especially competitors, add resistance training to fill the gaps BJJ leaves. The most common approach is lifting two to three times per week alongside three to four mat sessions. Full-body workouts are popular because they’re time-efficient and allow adequate recovery between sessions. Push/pull/legs and upper/lower splits also work well.
The priority for most grapplers is compound movements that support what they do on the mat: deadlifts and rows for pulling strength, squats for hip drive, and pressing movements to balance out all the pulling. The goal isn’t to train like a bodybuilder. It’s to build a base of maximal strength and address the movement patterns BJJ neglects, so you can apply more force on the mat without burning out. During competition season, many athletes scale back to one or two lifting sessions per week to prioritize mat time and recovery.
If you’re training BJJ primarily for fitness rather than competition, even one solid lifting session per week can help maintain muscle mass and keep your strength balanced across movement patterns that grappling underserves.