The Thousand-Pound Day Was Easy. The Years Before It Were Not.

Lex Fridman introduces Chris Duffin as one of the strongest people on earth and as an engineer of odd, serious strength equipment at Kabuki Strength. Duffin is the only person who has both squatted and deadlifted 1,000 pounds for multiple reps. Asked which feat he is proudest of, he does not pick a single lift. He picks a five-year plan that was, he says, his exit from competitive lifting after sixteen years in the sport and roughly eight years at number one in the world.

Three things were driving the plan. The first was inspiration: to show that a single-minded goal can go well past what people think is humanly possible. He would not even say what the goal was up front, because it was so far out that he would have been laughed at. "Big goals should be kept pretty damn close," he tells Fridman, at least at the start. The second was to walk the walk on the movement principles he believed in — spinal mechanics, and the output those mechanics can unlock.

He chose the two most basic patterns every able-bodied person should own: the squat, which shows up around nine months in developmental kinesiology, and the hip hinge, picking something up off the ground. He wanted both, not one, because he is not a specialist. His lever lengths and torso proportions are not built for either lift as an outlier. About half a dozen people had squatted 1,000 pounds, and about half a dozen had deadlifted it. The lists did not overlap. He wanted to do both, and to do them for reps, so there would be no argument left.

Old elbow trouble meant he had to wear straps, which is why the lifts could not live inside a competition. The first year he pulled 1,002 pounds — the plates were weighed afterward and came in a little over — for almost three reps. The single still stands as a Guinness mark for the most weight ever sumo-deadlifted. One other person has since deadlifted 1,000 for reps: Thor Björnsson, the actor who played the Mountain on *Game of Thrones*, who hit a double. Then came four years of building axial-loading capacity, moving the weight from the hands up onto the shoulders. A single lasts five to ten seconds. Reps last thirty-plus. The diaphragm has to stabilize and breathe at the same time, and the people who had done either lift at that weight all sat between 380 and 440 pounds. Duffin was 265 to 285.

The squat was supposed to happen at the largest equipment exhibition in the world, in San Diego. The show was cancelled a week out. Duffin moved it to his own gym and invited people. That Saturday, gatherings had just been capped at twenty-five. Monday, everything shut down. Timing, he says, was surreal. He had pushed to the limit of what he could do. If he had not done it that day, it would never have gotten done.

Every feat along the way was paired with a charity he believed in, many of them tied to his own life story. Fridman wants the actual day. Duffin’s answer is almost disappointing if you came for drama. "The day of is really easy," he says. People always ask how beat up he was after the deadlift. The simple fact is it was easy. The work to get there was horrendous. There were doubts, though. In the months leading in he had passed out under the bar, fully losing consciousness, on weights still under 1,000 pounds. The fear was not missing a third rep. It was getting up there and failing to do one, after talking about the goal for so long.

Training, as he describes it, is about accumulating fatigue and then letting off so the body supercompensates. Leading into a big event you pile that fatigue high; on the day you have a window to recover and do a little more. On the first squat rep, strength-wise, the thought that went through his head was that he could do five. It was fast and it felt amazing. Rep two was the realization: this is for reps with 1,000 pounds on your back, and you are fatiguing in a way that does not match the first one. The third was every last thing he could muster. He barely stood it up. The legs were there. The capacity to manage all the other resources for that long was not.

Going from 500 to 1,000, he says, is exponentially harder. He started lifting in 1988. At his first meet in the early 2000s his max deadlift was 523 pounds and his first squat was 550. At 500, body type and talent can still paper over rough positions. At 1,000, a quarter-inch or half-inch change can make or break the lift. Everything is amplified. There is almost no leftover room for waste.

Duffin talks about heavy lifting the way an engineer talks about a pressure vessel. The phrase he wants is torso stability, not the gym-floor slogan of core strength. The diaphragm attaches at the rib cage. It has to sit in opposition to the pelvis. Then you eccentrically load the abdominal cavity: the diaphragm presses down like a pump on the tissue and organs, that pressure pushes out against the abdominal wall, the obliques, the thoracolumbar fascia, and you get a co-contraction at the pelvic floor. The cylinder tightens. The spine is braced from every side.

If the ribs and pelvis are out of alignment — too much extension, too much flexion — pressure leaks out the front or the back and the whole structure fails. Breath is often a default cheat: people suck air into the chest and lift the rib cage. He wants the diaphragm to initiate; air can be added on top at the end for a little more downward pressure. The same stack puts the muscles on both sides of the body into a useful length-tension relationship. Think of a curl. The biceps is weak fully stretched and weak fully squeezed. Somewhere in the middle it can actually produce force. Arch or collapse the torso and some muscles are past that range, which means the other side goes slack.

Next is the foot. The foot and ankle are the interface with the ground: how you grab, grip, and create that connection travels up the whole structure. People love to stare at knee position and hip angle. Duffin calls those outputs. Control the torso and the feet, and the only thing left for a squat to do is happen. The hips, built for extension, can then drive. He also flags a piece most people miss: the lat is a spinal stabilizer. It controls function at the thoracolumbar junction, roughly opposite the sternum, just above the lumbar spine. Lifters who fold in an Olympic squat are often close-grip, unable to engage the lats, pushing up on the bar instead of pulling it to their center. Pull the bar in, use the lats, and the shoulder packs into the same compressed cylinder. That is why he keeps saying torso stability, not core stability. No single muscle’s name covers it.

He hates assessment on a table. The body adapts when there is an imposed demand — mental and emotional as much as physical. Empty movement drills can give a little proprioception. They do not change much. The method at Kabuki is to watch a person squat, deadlift, or carry, find the first place the pattern fails, and use a cue until it holds. Add load. Find the next fault. Repeat. They work with 29 of 30 Major League Baseball teams and, he says, about 90 percent of professional sport in North America, plus some Tour de France work. The Dodgers are not hiring them to teach powerlifting. They work mostly with coaches, often with more shoulder focus than hip focus, and the job is the same: get joints into a position that can take load without dumping stress into the wrong place.

The largest global effect is spinal mechanics. He will not even look hard at a shoulder if the spine is not managed, because arching and flexing change flexion and extension at the shoulder and can show up as far away as a dorsiflexion problem in the foot. The foot is second. Then the big engines, the hip and the shoulder. Knees and elbows are usually outputs of something upstream. Get the stack right and you change the neurology, not just the picture.

Then he reaches for a car. Drivers think traction control sends power from the slipping wheels to the gripping ones. That is not how it works. The computer senses a loss of connection and tells the engine to retard timing, soften the shift pattern, and cut output so you do not die. The human body is the same machine. Feet are the tires, hips and shoulders the engine and transmission, fascia the suspension, the nervous system the computer. If it does not trust a joint, it turns you down. Duffin says he can change neck position at the thoracic outlet and immediately see about a 10 percent jump on a velocity device. Stack that across years of training and the unused capacity is enormous. This is not just injury prevention. It is performance, and it compounds. A race car does not have a traction-control button. It has tires that grip, a suspension that is tuned, and a driver who puts his foot on the floor. That, he says, is what he wants a human to be.

Fridman asks what it felt like to finish. Duffin’s voice changes. He started crying. It was overwhelming to have worked so intensely, for so long, at something that pushed every ounce of him to the limit — and then to have done it. "I did exactly what I said I was going to fucking do." He cried uncontrollably. The mix of emotions is hard to explain, he says: the completion of a thing, and the start of a new phase. Fridman tries to put it in a larger frame, a glimmer of excellence in the human spirit. Duffin will not let "perfection" sit there. You can always put more in. There is no such thing as perfection. Any great workout or accomplishment can be second-guessed. What he will claim is the ending.

He left on his terms. After thirty years of training he did the thing he could not even say out loud years earlier, and then he was done. He did not leave from an injury. He was not forced out. That is unusual, he says, in sport and in life: people taper, fail, get hurt, or roll into retirement. He did something he thought was great and walked away while he still could. It is not, he adds, the greatest thing he will ever do. It is the greatest physical thing. It was a way of expressing values he still wants to live.

That distinction matters because so many athletes hit the end of a career and fall into depression, drugs, and alcohol. A central piece of identity is gone and they do not know where to turn. Duffin knew the thousand-pound work was only one way to express what he is. The grand goals have shifted to Kabuki Strength: changing the face of fitness and tying it through clinical medicine and telemedicine. He figures he is five years in, with another five before people even see what he is building, because the ground layer — equipment, methods, environment, clinical assessment, and the links among them — did not exist. He does not deny the sadness. It lives in the singularity of focus, the way the rest of the world fell away in the final phase, the team locked in around him. After the squat it took a couple of months. One day he woke up and thought, welcome back to the world. He misses that intensity. He also knows he cannot stay there. The cost, for the life he wants, is no longer acceptable.

When Duffin says singularity of focus, he does not mean a man alone with a barbell. The last phase pulled in rehab, recovery, nutrition, drugs, Chinese medicine, and the people around him. Fridman jokes that he should have gone outside North America and talked to some Russians. Duffin does not argue. Eastern Europe, he says, remains a dominant force in strength, and some of his biggest rivals in his competitive days came from there. He has "the best one" coming in September to get "fixed" — an athlete who has held the all-time world record repeatedly, has not competed in some time, and reached out to see if Duffin can get him back. Everyone wants the output, the fix for the thing that hurts. The answer always traces back to the same stack.

The company is the other outlet for those values. He had to invent equipment, develop methods, and build a ground layer that did not exist, so that training methodology, tools, environment, and clinical practice could sit in one ecosystem. Right now that stack is shattered: gyms buy gear, doctors read images, therapists do manual work, coaches cue reps, and none of them share a language. He wants one assessment grammar that runs through all of it. The work with teams is the same idea at scale. Put the joint in a position that can take load, avoid unnecessary stress, get a decent length-tension relationship. Spinal mechanics first, feet second, then the big engines, then the peripheral joints. A desk worker with ribs and pelvis parked in the wrong place for eight hours gets the same nervous-system message as a lifter whose stack has leaked: not safe, cut power, make the low back do overtime.

Fridman asks for the childhood. Duffin says it is outside the norm — today, maybe, though not 150 or 200 years ago. His parents were highly intelligent. His mother was in school in the Bay Area to become a chemical engineer, a top student-athlete. His father was a member of Mensa. His stepfather was a genius who could not really function in society. His mother had demons of her own, and one day she said she did not want to be part of society. She still is not. She lives in the desert. The family ended up in the mountains of Northern California, trying, among other things, to grow marijuana when that was highly illegal. The places they lived were dangerous. A recent documentary, *Murder Mountain*, maps onto the world in his book, *The Eagle and the Dragon*: serial killers, human trafficking, police corruption, murder. He says if the book does not make that feel real, the film will.

They lived by a stream on an alpine meadow with no roads in; you hiked. Bedding was lashed into the trees on beams because rattlesnake dens sat all around. At six he was taught to capture and handle live rattlesnakes, grabbing by the side of the head so it could not bite, the body wrapping his arm, the animal staring at him with one intent. A bath meant filling a jug in the stream, setting it on a rock in the sun, and dumping it over his head. A family of six lived in a sixteen-foot trailer, not much bigger than the room he and Fridman are sitting in. Hard winters, feet of snow, nowhere to go. He slept in the back of a pickup in a Salvation Army sleeping bag that was not rated for the cold. Some of the houses were condemned, no doors, no electricity, no running water, or one but not the other.

By high school there was a mobile home bought with a disability payment for the stepfather’s long-broken arm. It had water and power, no kitchen, interior doors missing, windows that would not fully close, plastic on the trim against the weather. There were summers foraging mushrooms. Police took the children into foster care for a while, stories he ties to trafficking and still finds hard to talk about. The parents got them back, moved to Oregon, and stayed out of the drug trade so they would not lose the kids again. Life slid toward the same shape anyway: geology, mining, firewood, because a chainsaw was hard on that broken arm. They were a cohesive unit battling the world, work and play together. He helped raise his siblings. Later, while putting himself through college, he took custody of his sisters after his mother had a mental breakdown and left for Montana and the stepfather descended further — including kicking a thirteen-year-old sister out into a couple of feet of snow because he thought she had stolen his favorite cereal bowl.

He still loves his mother. She taught him strength, perseverance, and living life on his terms; she was also the one who figured out the trafficking situation and got a district attorney involved. He is blunt about inheriting demons. On his stepfather’s side the ledger is brutal: six or seven suicide attempts, one in front of him; the stepfather’s mother died by shotgun; a brother jumped from a window in Los Angeles. Duffin has considered suicide. The things people praise him for — taking in his sisters, being the person everyone relied on — he did selfishly, he says, to save himself. If he failed, they failed, and they would end up like the people he grew up with: dead, in prison, or on drugs. Only in the last decade has he started confronting the darkness instead of outrunning it with responsibility. If you have mental-health issues, he tells the room, this is not something you tackle alone.

The book’s title covers his body. Around nineteen he sat for some forty hours of tattoo work: an eagle across the stomach and rib cage, another across the back, chained at the claw, the chain wrapping down to a shackle at the ankle. It was a picture of potential. You can fly to whatever height you want; the only thing holding you back is yourself. He had not accomplished much yet — valedictorian of a small high school, a state-level wrestler — but he already believed that. The second tattoo came in 2015 and 2016, a dragon ouroboros circling the upper body, tail in its mouth. Eating the old, becoming the new. Not just realizing potential, but deciding specifically who you want to be and becoming that person.

By then he had flown. The poor kid from the mountains had the American dream on paper: corporate executive, the person you hired to fix a company and prep it for sale, or to take it from regional to national to global, across automotive, aerospace, high-tech, heavy industry. House with a white picket fence. All-time world records. A gym on the side. A comfortable marriage with no arguments. He walked away from all of it except his kids. He sold multiple homes, cashed in nearly twenty years of retirement, and leveraged himself into millions in personal debt so that if he failed there would be no way back to the old career that would not mean an apartment for the rest of his life paying it off. He asked for a divorce. He lived in an apartment for a couple of years with no income, selling everything except two vehicles he had built, and started companies meant to get people out of pain through strength.

He does not recommend burning every bridge. When there is no way out, there is no way out, and he admits he can be overconfident and lives through extremes. The shift was slower than the myth: he had thought about going back to school as a surgeon, physical therapist, or chiropractor, and he would not compromise his family’s quality of life until the business could carry the first years. The apartment and the emptied accounts came a couple of years into the process, when growth demanded more. Fridman is in a similar fire. Duffin’s warning is aimed at hustle culture. If someone asks whether they should start a business, he says no. If you need him to motivate you, this is the wrong approach. It will be harder than you expect. It had better be a north star, a way to live your values in public, not a plan to make money and be known. The years of struggle will not feel like glory while you are in them. Ten years later they will.

Fridman asks him to separate the disciplines. Duffin talks in qualities: strength, power, endurance, coordination. Powerlifting, despite the name, has no power in it. It is brute application of force. Olympic lifting is the explosive cousin. Strongman mixes foot speed, more endurance, and implements, and it selects for large frames; very few people under six feet have ever done well at it, because the events are leverage. Sports themselves, he argues, often grew out of populations and hip sockets. Highland games favor deeper sockets and short hip-hinge throws. Muay Thai and wrestling sit on a different hip. Olympic lifting’s depth produces a long history of hip and back trouble in bodies that cannot get there. CrossFit looks a bit like strongman for a wider range of bodies, with more metabolic conditioning. Conditioning, in his view, develops fast and peaks fast. Strength you can keep adding for years. For a strength athlete he cycles conditioning in six-week waves, offset from strength peaks, and tapers it before a meet so recovery can go into the thing that matters.

The training principle underneath is work capacity. More work in a given time means more progress, but that does not mean maxing work every session. Start by getting the most result from the least work, because you have to stair-step this for decades. A common miss is grabbing a Sheiko-style program written for someone with twenty years of capacity and trying to live in it. Injuries, not motivation, are what wreck long consistency. The research frame he uses is acute versus chronic load: this week versus the average of the last six months or so. Raising the chronic average is how you get stronger over years. You build the right to do that with spikes in acute load. If a spike jumps more than 10 or 15 percent above the chronic average, that accounts for about 80 percent of injuries — and they often show up four to six weeks later as a nagging elbow or wrist, not as a dramatic breakdown on the day. Coming back from a deload or a vacation by "making up for it" is how people manufacture that spike.

A year out from the thousand-pound deadlift he was pulling heavy once a week, really heavy only twice a month. He needed two sessions a week. He did not just add a day. He split the existing session, moved volume to a second slot, added work from blocks so the range of motion — and the cumulative load — stayed smaller, then walked it toward the floor. At his level the weekly change might be one extra rep: three sets of three becoming two doubles and a triple. For the squat, the last phase was average loading on the heavy sets: eight reps at 955 one week, then 957, 963, working up to about 985 for eight or nine. That is why the day of felt easier than the cycle. A year out he also refused to specialize in the competition squat too early. Front squats first, then his Transformer Bar, which lets him manipulate spinal mechanics and bias the torso more upright, walking the setting toward a back squat each cycle. Axial loading, top to bottom, is the vector he finds hardest to recover from. Jumping is a different vector; hip thrusts transfer to a standing jump better than squats do, even though both train glute extension. Variety belongs in three-to-four-month blocks for ordinary lifters. Big jumps in frequency do not.

What role does strength play in skill sports? Duffin starts with baseball, which Fridman half-jokes you can excel at without being in shape. That is exactly why Kabuki sells so many Transformer Bars into the majors. These athletes already have skill. What they lack is a training culture and the resilience to push a little harder, add a little force, and recover. The bar can be set so the squat is almost self-coaching in a crowded room. Once skill is high, adding strength is often the only forward path. Resilience matters in fighting sports too: you get thrown, twisted, crashed. Even a cyclist who never trains upper body can end a career on one fall if the shoulder has never seen load. The miss is piling strength onto bad motor patterns. There is no magic training age for kids. His daughter started before his son because her movement quality arrived earlier. No point creating adaptation if the thing you are adapting is wrong.

Fridman quit powerlifting after starting judo and jiu-jitsu because the stiffness kept him from relaxing enough to learn. Duffin says that is not a problem with lifting. It is a problem with how Fridman was lifting. Athleticism is speed to relaxation as much as speed to contraction — float like a butterfly, sting like a bee. Most serious lifters have been taught to be tense all the time, which is why shoulders get stuck. Duffin’s first product was a loadable mace. A kettlebell halo you can muscle; a mace at the right length you cannot force. You have to relax, then contract, on and off around the shoulder girdle. Stiffness often means stabilizer muscles have been recruited to do the moving because the joint is in a poor position, or the program is under-recovered, which he puts at about 80 percent of cases. He is a thousand-pound squatter who can fall into a quad sit and get close to a split without stretching. "Squatting doesn’t make your hips tight. Squatting like shit makes your hips tight." Soft-tissue tools are a band-aid. He manufactures them and does not want you living on them. Use them so you can get into position today, then go find why the same spot keeps locking.

There is another trap in combat sports. Strength lets you get away with bad skill, and the ego hates being destroyed by someone smaller. He still wants skill built first, but you can lift and learn at the same time if you understand the tax. Jiu-jitsu is additional load. You cannot stack it on an unchanged lifting week. Heart-rate variability can help you see the sympathetic cost when the grappling volume is otherwise invisible.

Kabuki Strength Lab, once the Elite Performance Center in Oregon, was the test bed. Duffin had spent years in rooms with developmental kinesiologists, a famous physical therapist, a spine biomechanist, taking clinical courses and then lecturing with those people, asking how the ideas behaved under a barbell. Success, for him, is three things: the right methodology, the right tools, and the right environment. The gym is not advertised. Neighbors stumble on it and ask how long it has been there. It exists to test tools and methods on enough people to have a culture. When they grew from 4,000 to 9,000 square feet, intensity dropped and people complained for years. They shrank back to about 3,500. Closeness came back. A little grime tells you work is to be done, and that work has already been done here. He and Fridman wander into Joe Rogan’s line about comedy clubs that hold a history in the walls. Duffin is willing to get a little woo about it. The energy is there.

Everything Kabuki releases, he says, is something the industry has not seen, built as a play on what already works rather than a novelty for its own sake. The design brief is always the same: rapidly accommodate an individual’s leverages, mobility, and training needs, and shrink the footprint. He put an entire gym — squat rack, specialty bars, horizontal and vertical pulleys, handheld weights — on a truck bed and drove to the desert. The Transformer Bar is the only bar he knows that lets you manipulate spinal mechanics. Two other bars sit on what he calls playground physics. A hex/trap bar and a Swiss-style pressing bar with offset handles behave like a teeter-totter: center of rotation on the same axis as center of mass, so the bar is always trying to tip. Put center of mass below center of rotation — an arc, a swing — and the bar finds center. His pressing bar’s handle angles are based on shoulder width, leaving a little external-rotation cue so the lat can still stabilize. He walked the prototype into MLB meetings where head strength coaches had bad shoulders and had not taken a bar to the chest in years. Five teams, same scene: they could not do it, then they did it, then two plates, no pain, through three extra inches of range because the joints were stacked.

The trap bar opens on one side, jacks up to load, offers high and low handles with a slight offset that still centers, and comes in widths for a teen or a 7-foot-6 NBA player. Carries, split squats, curls, overhead presses, rows that do not hit the shins, seal rows, ab rollouts. He scratches ideas on paper and hands the chicken scratch to an engineering manager; in the early days he just walked out and built. Newer work includes a patent-pending all-in-one flywheel, floor and horizontal, at about half the usual price because one moving mount replaces two machines, plus a handheld weight that changes torque without leaving the hand, covering dumbbell, kettlebell, and center-mass-bell patterns and letting you swing into a drop set without putting it down. Time under tension is the obsession.

Then the foot. Barefoot Athletics — BEAR, B-E-A-R — uses the tagline "optimizing the human-to-ground interface." We train every other part of the body and then package the foot as if it were a different organ. He asks people to imagine rolling out of bed into a lifting belt, knee wraps, and elbow wraps and wearing them until night. You would get weaker, lose range, and dump work into other joints. Shoes exist to protect from cuts, heat, and ground. Meta-analysis, he says, shows orthotics do nothing beyond temporary pain relief over six to eight weeks. A low arch is not a disease; it is a control problem. The raised running-shoe heel was a workaround for shortened calves in a heeled-shoe population, and then the raised toe and the arch support piled on as band-aids. His thousand-pound squat and deadlift were done barefoot. He is not selling a religion of no shoes. Spend some time using the foot, strengthen it, learn to control it, and you will work better in a shoe. Build that capacity the way you would build a squat: 10 percent of the day for a month, not a jump to all-day minimalist wear. Low-back pain, which he names as a leading U.S. healthcare cost, traces in part to spinal position, breathing, and the foot. A raised heel changes gait, which opens the pelvis and diaphragm, which is the same stack he has been talking about for two hours.

Diet, for Duffin, is unfashionably simple. You need a base of protein as building blocks and a base of fat so hormones work. Carbohydrates are not required for performance — the other macros can convert — but they help a high-capacity athlete. People see him lean and assume keto or carnivore. Losing and gaining weight is eating less or more. Fasting, when he does it, is just a way to control calories around a schedule. Keto and carnivore make it hard to eat enough; protein is thermogenic; a man on a wilderness show ate a caribou and still lost a pound a day once the fat was stolen. Those styles are not performance diets. He has gone from 285 pounds under a heavy squat to veins-out at 7 or 8 percent body fat on food that still tastes good. Find a lifestyle, not a diet. If you do not enjoy it, you will break. He once ran 20-to-22-hour fasts and discovered he could not do business lunches, so he moved to a 16-hour window for the social meal. The eight-meals-a-day bodybuilding split never fit between meetings. Same calories, less bloat, same result.

Then steroids. He could not talk about them as a corporate executive. He has used them since he was 33, for about ten years, and after the big squat he is basically on TRT. The line around a PED, he argues, is always moving with culture and agencies. Sodium bicarbonate helped his Guinness deadlifts-in-a-minute record; it is baking soda. American energy drinks can hold 240 milligrams of caffeine; Canada caps them lower and still sells ephedra, which is illegal in the United States. Yohimbe is a drug in Europe or Australia and an herb in the U.S. Unless you signed up for a tested federation, you have to draw the line yourself. He has a prescription for growth hormone and testosterone. Plenty of people on camera who moralize about drugs, he says, are walking into anti-aging clinics with the same script. In Oregon a sixteen-year-old can get testosterone at a gender clinic without a parent; an athlete with levels so low he is depressed and cannot have sex has to fight for a prescription and then gets banned for competing. Tested versus untested powerlifting puts a number on the strength effect: about 10 percent on average, not counting the extra mass that often bumps you up a weight class. You can take steroids and be stronger in ten minutes, which is neurology, not new muscle. Most compounds work through muscle-protein synthesis and an anti-catabolic effect. The neurological piece — more load over time, more of a specific session — is what he finds under-discussed. He was already a four-times-bodyweight deadlifter, 800-plus at 198 pounds, before he went on. Natural testosterone had fallen below 300 from the stress of chasing numbers. He waited until he had the drug-free records he wanted. If he knew what he knows now, he might not have gone down that path so fast. Once you go on, realistically, it is a life decision: coming off feels worse than before. TRT still carries risk — prostate, left-ventricular hypertrophy, arterial plaque — and it will not turn a red 150-pound kid at 24-Hour Fitness into a champion.

Alcohol is the stranger PED. He is talking about a drink or two, once or twice a month, three to five minutes before a heavy lift, a shot rather than something that bloats. Seven calories per gram, a preferred fuel, a blood-pressure spike that makes weights feel lighter, and a narrowing of second-guessing — liquid courage at the bar, the same chemistry. Too much and you make a fool of yourself. He stole the idea from Russian lifters taking vodka before they pulled, then went looking for the mechanism. It is time-sensitive, small, and, he claims, can be more powerful for a flow state than some of the drugs people use for the same job. On working hard versus working smart he refuses the fork. He is the intellectual and the meathead. He built a custom hydraulic cart so plates roll up to squat height, saving his back for the lift that might kill him. In company turnarounds the first thing he did was nothing, to see what actually came back, because failing people fill the day with motion. Then: quit doing what does not need to be done, automate what repeats, outsource what is not your unique value. You still have to chop wood. He tells people who want an online brand to go work the floor at Planet Fitness for a few years. His title is chief visionary. He has run a lathe, a mill, a welder, and code.

Advice for the young: you do not have it figured out, so jump in. He threw away a whole life and does not regret the years in industry, because that was a paid education in how to help people realize they could do more. Friends who were "ready" to launch got told to go take a management job; later they called it the best move they did not want to make. Do not stress yourself into needing the perfect thing. Get paid to learn. On death he is not theatrical. If he is in the middle of a project he wants to finish it. What he fears is leaving his kids and his wife. Outside that, he has lived hard and loved hard. While a documentary crew interviewed people from every chapter of his life, the theme that came back was that Duffin would show up — fly in from Boston, give whatever was needed. He has more he wants to do and not much he has failed to do. Fridman hears a Bukowski poem in it: go all the way, otherwise don’t even try. Duffin does not fear the end the way he feared failing his sisters. He fears not being there.