Diana graduated physical therapy school before discovering jiu-jitsu, starting at 28 in 2018. She came to BJJ specifically to be a beginner at something new after years of team sports including basketball through high school. Her decade of clinical PT experience grounds Open Mat Physio's rehabilitation framework and client programming.
Kris came to physical therapy because of jiu-jitsu and his own injury history — he got into PT to learn how to fix himself. A ten-year black belt who taught at UCLA's jiu-jitsu club and the Coop in Culver City before finding Open Mat Physio's mission already in motion with Diana. He trains at Varsity Jiu Jitsu under Isaac Doederlein in Monterey Park, California.
I started this podcast because I kept watching guys in their 30s and 40s show up, fall in love with jiu-jitsu, and then disappear. The injury rate. The burnout. The chronic soreness that nobody told them how to manage. The recovery that nobody prioritized because the culture did not prioritize it. Diana and Kris at Open Mat Physio are doing exactly the work that would have kept those guys on the mats — and they are doing it from the inside, as grapplers themselves, which is the only position from which this conversation can be had credibly.
What I appreciate most about this conversation is that it is not complicated. The non-negotiables they have landed on after years of working with everyone from fresh-post-surgery athletes to competitors looking for the next edge are not exotic. Sleep. Volume and intensity management. Two resistance training sessions a week. Don't eat like garbage. These are not revelations. They are the things that the loudest part of jiu-jitsu culture consistently drowns out in favor of rolling harder and going more often. Diana and Kris are the counterweight.
Two Sides of the Same Mission: How PT Experience and BJJ Experience Built Open Mat Physio
The pairing works because the credentials actually complement rather than duplicate. Diana has nearly a decade of clinical physical therapy experience and came to jiu-jitsu as an adult beginner in 2018 — which means she has the practitioner's eye for how bodies move and break, without the accumulated bias of someone who learned the sport so early that the damage became invisible. Kris is a ten-year black belt who got into physical therapy specifically because of his own injuries — the classic practitioner origin story of someone who learned the system because they needed it personally.
What they have built together is less a disagreement about approach than a shared framework arrived at from different angles. Diana brings the PT protocols. Kris brings the deep BJJ context — the understanding of how positions actually stress the body, what the game demands from specific tissue types, and how to communicate with athletes whose primary identity is grappler rather than patient. When a client comes in with a shoulder issue, Diana assesses the scapular mechanics; Kris frames it in terms of what that means for their guard game. The translation layer is the value.
"Our goal is to try to work with anybody willing to let us help — from fresh out of surgery all the way to someone feeling pretty good but looking for that next step with a rehab flair."
— Dr. Diana Wang, DPT · Open Mat Physio · openmatphysio.comTheir primary audience, as it has crystallized over time, is the hobbyist — the person for whom jiu-jitsu is a significant part of life but not the only thing. The competitor whose career depends on staying healthy has resources available that the 40-year-old with a job and a family training three nights a week does not. Open Mat Physio is explicitly building for that person: the one who cannot afford to disappear from the mats for two years because of an injury that competent management would have prevented, who needs a framework that fits into a real life rather than a full-time athletic program.
Not Wrecked — Just More Miles on the Tank. What Starting Later Actually Means.
I asked the direct version of the question: are people starting jiu-jitsu in their 40s just wrecked? Diana's answer was careful and more useful than the simple yes or no: not wrecked, but carrying more history. Injury history that will surface under the specific demands of jiu-jitsu if it has not been addressed. Movement patterns from decades of sport or desk work or both that will create predictable failure points on the mats. A recovery capacity that is not what it was at 19 and needs to be managed accordingly rather than ignored.
The specific failure pattern she describes is one I have watched play out repeatedly: the person who has an old shoulder issue, it does not bother them in daily life, they do not deal with it, and then three weeks into jiu-jitsu it is suddenly the only thing they can think about. The mats find the vulnerabilities that ordinary life accommodates. The load is different. The angles are different. The demand for the shoulder to move through ranges it has not been asked to move through in years is immediate and unforgiving.
Powerlifters who come to jiu-jitsu are a specific and consistent presentation: strong, bilateral, and completely unprepared for the rotational and unilateral demands of grappling. Their entire training history has been bilateral compound movements with neutral spine emphasis. Jiu-jitsu requires rotational load tolerance, single-leg stability, and the ability to produce and absorb force through the spine in non-neutral positions. Split squat? Falls apart. Single-leg balance? Compromised. Spinal rotation under load? Never trained. The strength is real; the capacity for how that strength needs to express on the mats is almost entirely absent.
The athlete who has spent years pulling their shoulder blades down and back to create tension for pressing and pulling movements arrives with scapulae that cannot move through the ranges jiu-jitsu requires. Upward rotation for overhead reach. Protraction for frames. The full circumduction that effective shoulder mobility in guard and scramble situations demands. The cue that built their strength — retract and depress — has become a fixed default that the shoulder cannot exit. The Americana that hurts them immediately is not a freak event. It is the collision between their mobility ceiling and the position's demand.
Chronic forward head posture and rounded thoracic spine from years of desk work create specific vulnerability in jiu-jitsu's positional demands. The neck is not accustomed to the load of someone posting their weight through it. The thoracic spine, stiffened into flexion over years, cannot extend or rotate efficiently under resistance. Lower back injuries in jiu-jitsu frequently trace to thoracic restriction — the load goes somewhere, and if the thoracic spine cannot absorb it, the lumbar region takes it instead.
Most knee injuries in jiu-jitsu are not contact injuries — they are forcing events. Someone is in a bad position, they try to fight out of it, the rotation happens under a load the joint cannot manage in that range. The early leg lock era produced a predictable wave of these: practitioners who did not understand the heel hook's mechanical advantage tried to fight through it and tore ligaments that any experienced submission grappler would have tapped to immediately. The principle generalizes: forcing is the injury mechanism, not the position itself.
The recovery capacity question is equally important and more frequently ignored. Kris's framing is direct: you can only train as hard as you can recover. If you are always on empty — always sore, always feeling broken, always taking longer to bounce back than you think you should — the body is telling you something about the balance between load and recovery that the training culture does not want to hear. The solution is not to train less. It is to train intelligently, with recovery built into the structure rather than treated as optional.
Four Things That Actually Work: Sleep, Volume Management, Lifting, and Not Eating Like Garbage
The question I asked — what are the non-negotiables, the real baseline for anyone who wants to stay on the mats — produced the most immediately actionable content in the episode. Diana and Kris have taught enough seminars and worked with enough clients to know what the minimum effective dose looks like. And the answer is simpler than the jiu-jitsu recovery industry would like it to be.
- Sleep — Quality First, Then Quantity. The ideal is eight to nine hours. For new parents, shift workers, and high-stress professionals who cannot reliably hit that number, the target shifts to maximizing quality within whatever window is available. Dark room. Cold room. No short-form dopamine content before bed — the cortisol and sympathetic activation that follows doomscrolling or emotionally engaging content directly degrades the sleep architecture that makes the hours restorative. Set an alarm for bedtime the same way you set one for waking. The body's repair processes, hormone production, and neural consolidation of the technique you drilled that night all happen during sleep. Nothing else in the recovery stack matters as much.
- Volume and Intensity Management — The High-Low Principle. High one day, low one day. Alternating. Applied consistently. The single most common failure pattern Diana and Kris see in dedicated hobbyists is training at maximum intensity every session because every session feels important and every training partner deserves their best. The body does not adapt to stimulus — it adapts to stimulus followed by recovery. Without the low day, the high day is not generating adaptation. It is accumulating fatigue. For midlife grapplers whose recovery window is already compressed, the cost of ignoring this is paid in injuries and burnout rather than gradual decline.
- Resistance Training — Two Sessions, 45 Minutes, Full Body. Not a complex periodization program. Not sport-specific preparation. Two sessions a week, 45 minutes each, full body, training to a point where the last few reps feel challenging. The tendons, ligaments, and connective tissue that jiu-jitsu stresses most heavily adapt to load only when load is applied progressively in a controlled environment. The grappler who is only grappling is not building the structural reserve that keeps those tissues from failing under the specific demands of being thrown, twisted, compressed, and scrambled. The gym work is the foundation the mat work builds on.
- Nutrition — Stop Eating Like Garbage. Kris's formulation was direct and I appreciate it: not our specialty, but you already know. Reduce the processed food. Eat real protein. Add fruits and vegetables. The guy who ate three burritos before training and then ran out of gas in the first round is not an outlier — he is a direct demonstration of how fuel quality determines output. The details of optimal nutrition for grappling performance matter less than the gap between what most people are actually eating and what basic nutritional adequacy looks like.
The 80% Rule — A Framework That Eliminates Most Injuries
I shared a principle from a conversation with another black belt that Diana and Kris both immediately recognized: the 80% rule. If you have to go beyond 80% to win a position or escape a submission — tap, acquiesce, let it go. The injuries are not happening at 80%. They are happening at 100% when the body is forced through positions it cannot manage under full load. The RPE (rate of perceived exertion) framing they use in seminars is the same principle translated into training language: identify your seven or eight out of ten and stay there. The likelihood of forcing a position — and the injury that follows — drops dramatically when you are not operating at the mechanical and physiological ceiling simultaneously.
Breathe or Tap — The Missing Recovery Tool Between Sessions
Diana and Kris emphasize sleep quality and parasympathetic recovery as the foundation of everything else. Breathe or Tap — my breathwork deep dive for jiu-jitsu practitioners and midlife recovery — is the practical application of that principle: how to use breath to down-regulate after training, improve sleep architecture, and build the CO₂ tolerance that keeps you composed on the mats rather than gassing out and forcing positions. Find it at ThatJiujiteiro.com or on YouTube @thatjiujiteiro.
Dominant Side, Bilateral Training, and the Usain Bolt Problem
The question of whether to train both sides of jiu-jitsu — dominant and non-dominant — for the sake of physical balance produced one of the most useful framings of the conversation. Diana's answer maps directly to how sports physiotherapy actually approaches unilateral sports: she would not tell a baseball pitcher to develop an equally proficient off-hand delivery. The dominant side is the dominant side. The goal is not to create equal proficiency in both directions at the cost of the dominant game's development.
The PT intervention is at the capacity level, not the skill level. If the dominant-side hip flexor is chronically overloaded, the work is building capacity and addressing the imbalance in the weight room — not redirecting competitive mat time to the non-dominant guard. The skill stays on the dominant side. The structural preparation that allows the dominant side to perform without breaking down is the PT's domain.
"I'm not going to tell the athlete how to play their game. My job is to get them out of pain and a little stronger. I'm not here to change their technique entirely — that's for the jiu-jitsu coach."
— Dr. Kris Martin, DPT · Open Mat Physio · openmatphysio.comThe Usain Bolt example they use is the one I find most clarifying: if the fastest man alive presents with an anterior pelvic tilt that the textbook says should produce lower back problems, the correct response is not to prescribe a postural correction program. It is to address whatever is symptomatic without dismantling the movement pattern that produced the record. The NBA shooter with knee valgus in the release position does not need their shooting technique corrected. They need their knee pain addressed. These are not the same intervention. Confusing them is one of the more common ways well-meaning physical therapy ruins athletes.
The Disappearing Act: Why Midlife Grapplers Leave and What Keeps Them
The observation I opened with — that more people disappear from jiu-jitsu than stick with it — is one Diana and Kris have internalized as the organizing problem of their work. A black belt colleague calculated the cumulative time he had spent off the mats due to injuries across his career: nearly three years. For a recreational practitioner with a job and a family, two or three years of interrupted training is not just a gap — it is frequently the end. The return becomes harder each time. The identity of being a jiu-jitsu practitioner erodes. The injury becomes the story rather than the training.
The gym owners and senior practitioners they speak to at seminars tell a consistent story: the one regret that comes up most reliably from the people who have been doing this longest is that they wish they had trained smarter and taken their recovery more seriously when they were younger. Not trained less. Not competed less. Trained smarter. The conversation they are having with the forty-year-old today is the conversation that the sixty-year-old broken black belt wishes someone had been having with them at forty.
"You can only train as hard as you can recover. If you can't recover, you're always going to be on empty. And that's where we run into 'I'm always sore, I'm always in pain, I always feel broken.' Those are symptoms your body is telling you something."
— Dr. Diana Wang, DPT · Open Mat Physio · openmatphysio.comThe warm-up question is the most immediately actionable version of this. The practitioner who jumps in cold — skipping any preparation because they are running late or because they have never made warm-up a non-negotiable — is the one who comes out of training with the nagging thing. The one who has been saying "I really should take care of it" for six months. Diana and Kris see this pattern so consistently in their seminar work that they have built it explicitly into the curriculum: the people who warm up independently, who take that ten minutes seriously before class begins, are not the people who disappear.
Intention and Sleep
Two guests, two words. They did not confer. The words are different but they are not in tension — they are sequential. Diana's word first, then Kris's, because that is the order in which they have to operate.
Intention.
If you can be intentional about the way you approach jiu-jitsu and the way you approach your body, Diana says, it makes everything easier. But it requires something most people resist: sitting down, looking honestly at what you are doing, and asking whether it is working. Not adding more to the stack. Not finding the next supplement or the next protocol or the next piece of equipment. Asking whether the current approach is producing the outcome you want and, if not, what would need to change. Intention is the precondition for everything else on the list.
Sleep.
Kris's word is sleep — not as a casual suggestion but as the single variable that, more than any other, determines the quality of every other recovery input. He puts it in terms everyone recognizes: you know what a bad night of sleep does to a full day of performance, cognition, mood, and pain sensitivity. You know what a genuinely good night of sleep makes possible. The question is why that knowledge does not translate into treating sleep with the same seriousness as training. The alarm that gets you to training on time but the absence of any alarm that gets you to bed on time is not an accident of habit. It is a values statement about what matters — and fixing it is the single highest-return change available to most people who want to stay on the mats.
I will add one: the recovery is the training. I say it all the time. Sleep, movement quality, nutrition, managing how much load you put on the body in a given week — these are not auxiliary to the project of getting better at jiu-jitsu. They are the project. The mat time is the stimulus. Everything else is where the adaptation happens. Diana and Kris have built an entire practice around that conviction, and every black belt who has been training for twenty years and is now paying the interest on decisions they made at thirty will tell you the same thing.
The Recovery Stack Starts Here
Everything Diana and Kris said about recovery — sleep quality, tissue repair, managing the load between training sessions — requires the body to have the raw materials to do the work. What you put in between sessions matters as much as what you do in them. Lineage Provisions holds to the same standard as everything on this show: real ingredients, no shortcuts, designed for people who take their recovery as seriously as their training. Use code JOSHBUTTON for 15% off at Lineage Provisions, or grab the link in bio.
Open Mat Physio · Rehab Lab · YouTube · Seminars
Diana and Kris run their short-form content on Instagram at @openmatphysio. Their website at openmatphysio.com has one-on-one consultation information, the Rehab Lab (instructionals for every body part with the exercises they have seen the most success with in BJJ athletes), and self-assessment tools. Their YouTube channel hosts longer-form content for deeper dives. Seminars are ongoing — follow the Instagram for upcoming dates and locations.
Stay Dangerous. Stay on the Mats. Hard to Kill in Midlife.
