If It Is Not a Hundred Percent, It Is Not Happening: Huberman on Loyalty, Covert Contracts, and Love

It is Lex Fridman's birthday. Andrew Huberman, the Stanford neuroscientist and Huberman Lab host, has flown to Austin just to say so. They talk for hours, then decide last-minute to record his fourth appearance on the podcast. After a stretch of fitness talk — Huberman still lifts three days and runs three, and this year he simply extended the long run — Fridman asks what he loves most about getting older. Huberman's answer is not nostalgia. It is data. A few times in his life a signal arrived from the body: this is not good. He felt it, did not trust it, and two or three bad experiences later he could say that every single time the alarm had been right.

The reverse has been just as clean. Immediate delight, an astonishingly simple comfort with someone, a sense of peace in an experience — literally all of those people and moments are still in his life, and he still delights in them. What age gives him is permission to stop questioning the deeper recesses of the nervous system. In his teens, twenties, and thirties — he is almost 48 — he put real work into overriding those signals, thinking that fighting through them made him tougher or smarter. It did not. The people who felt wrong were, in the end, wrong. The people who felt wonderful from the first meeting still are.

He is careful to say this is not "gut versus other people's opinions." Often his community had better optics than he did. The fight is gut versus forebrain over-analysis. The relevant brain region is the insula, which represents internal sensation and interoception. Psychiatrist Paul Conti, whom Huberman calls one of the smartest people he has met, inverts the usual story of the brain. Most people treat the forebrain as the supercomputer, extra real estate on a monkey brain that makes us human. Conti says the supercomputer is the subconscious: everything under awareness that is driving feelings and the decisions we think we thought through. Huberman and Conti have already recorded a four-episode series on mental health — not illness — about exploring the self and cultivating what Conti calls the generative drive. Huberman calls it the most important work of his career so far, because almost no one is taught how to look underneath.

Fridman asks what is down there — the Jungian shadow. Huberman takes the Jungian claim that we all have all things inside us, the capacity for evil and for good, expressed in different ratios. Jung also named a smaller category, maybe 2 to 5 percent, who do not merely contain those things but spend a lot of time exploring them, including the darker recesses. Huberman, drawn to goodness and light like anyone else, puts himself near that group. Part of it is how he grew up. About a third of his childhood friends are dead or in jail, a third went on to impressive work, a third live more typical family lives. "I grew up with some wild kids." That crowd, and later the quieter shadows inside academia, trained his eye.

He offers a San Diego colleague as an example of a shadow he himself has not explored: pure ambition with no passion. It was obvious the man did not actually care about understanding the brain; the brain was just an avenue for winning. Give him something else and he would work on that — and he did, and left. Huberman went into science because he assumed all scientists wanted to understand the thing. Some people just want to win, and it does not even matter what. Better, he says, to know those parts are there and work with them than to refuse to acknowledge them and watch them surface as addictions or as harm to other people. Conti will describe ten "cupboards" for exploring the self. Huberman's own version of that work has been twice-weekly therapy since childhood, first as a condition of being let back in school, later paid for with a second job writing for *Thrasher* as a postdoc. Support and rapport are not enough. Insight is what a good clinician forces.

Fridman has a more practical version of the same problem. Once you see a part of yourself, do you accept it or fix it? He deeply values loyalty, maybe more than average, and disloyalty is painful. He is also extremely self-critical. Paul Conti has told him the self-critical engine is a bad thing he needs to fix; Fridman keeps saying it is who he is, that he oscillates between gratitude and attack, and that you should not mess with what seems to work. Huberman's first warning is almost architectural: one way to destroy a life is to spend it trying to control your own or someone else's past — wanting something you saw, did, or heard not to have been true, instead of getting close to what it was.

He does not think we can rewire deep preferences, what we find despicable or joyful. The real question is peace. Can you be at peace with being self-critical, get some distance, have a sense of humor about it? Or does it keep you awake and force you back to the table in a way that feels like self-flagellation? In the old Freudian vocabulary, *neurotic* is not an insult: it means you can see your own issues and work with them. Psychotic is the other pole. Stress itself is not the enemy. You can run hot all day — it will even optimize focus — if you can fall asleep and stay deeply asleep. Some people idle like his late bulldog-mastiff Costello. Others need friction to feel at peace. The destination is still peace.

Doing hard things, Huberman says he knows, feels good. The worst feeling is procrastination; completing something after the hard point feels like an infusion of some endogenous cocktail. You still have to be careful not to destroy body and mind in the process. David Goggins and Cam Hanes need ultras; Huberman does not. The test is not the object. The test is whether you can sleep, whether you can be at peace inside a hard relationship or a hard training block. Fridman, who has had some low years, hears it as a description of his own gap: he has not been able to find a place, or people, or moments that give deep inner peace. The usable picture of health, they agree, includes being able to step back and chuckle at the beauty and absurdity of what is going on inside the mind — and then keep going.

The lyric Huberman has carried since 2003 is from Rancid's *Indestructible*: nothing is what it seems, so he sits there laughing, he is going to keep going, he cannot get distracted. He needed it. His undergraduate advisor, a mentor and father figure, died by suicide weeks before that album. His graduate advisor, whom he loved like a mother, died at 50 of breast cancer. His postdoc advisor had a heart attack across the table on Huberman's first day as Stanford faculty and later died of pancreatic cancer. Certain things, he says, you do not just push to the periphery. You put them in the gutter and keep going, or you stop being functional.

The most concrete self-inventory in the episode is more recent. In April of the previous year he spent a day alone, with some medicine involved, trying to let go of something hard. He expected peace. He got eleven hours of mounting frustration and anger. The clouds were supposed to lift; they did not. A week and a half later he told someone whose opinion he trusts. The person said it was simple: Huberman had a giant blind spot. His sense of justice and his sense of anger were linked like an iron rod, and he needed to relax it. As they said it, the anger dissipated.

He hates seeing people wronged. That part is real, and he knows he has wronged people himself. What he could not see was how immediately anger got yanked in, tight enough to eat him. No plant medicine, no MDMA, automatically dissolves that. The chemical does not do the seeing. Talk therapy, journaling, friends, introspection, or all of the above still require an awareness of what you are not aware of. Justice without the weld was serving him; justice fused to rage was undermining the peace he thought he was chasing. The rod, he says now, is not a Twizzler, but it is no longer iron. Fridman wants the end state to be laughter. Huberman quotes the lyric back: he just sits there laughing. Then he adds the catch. Laughter gives distance. The question is whether you stop engaging. For some things, at some point, you say a hard no, laugh at yourself for saying it, and move on.

In the last year Huberman has added a morning inventory and a prayer. After sunlight, water, and the bathroom, he runs a four- or five-minute meditation through the roles he plays: I am an animal, a man, a scientist, a teacher, a friend, a brother, a son — plus the roles he still wants and has not fulfilled. Starting with "animal" is a reminder that the body needs sleep, food, and hydration, and that a human brain is marvelously complex and marvelously self-defeating. The list is an inventory of where he has been, where he is, and where he is going, so the day's other contexts do not erase the sister he wants to be a better brother to.

He has been reluctant to talk about prayer because he does not want to push religion. He thinks you can be an atheist or an agnostic and still pray. It started because certain aspects of himself would not resolve — not with more therapy, not with plant medicine, not with exercise, podcasting, science, or friendship. A male friend told him prayer is powerful. Huberman asked how. The friend said he did not know how, only that it lets you get outside yourself, give up control, and at the same time take control. Huberman's version is an ask: help remove my character defects so I can show up better in every role and do the work, which for him is learning and teaching. He is acknowledging something bigger than him, bigger than nature as he understands it, that he cannot and does not want to control. Does that make him less of a scientist? He hopes not. Bill Newsome, until recently head of neurosciences at Stanford, has talked about his religious life. Huberman's claim is starker: if we do not believe in something bigger than ourselves, traditional or not, we will at some level self-destruct.

He also remembers secretly praying as a child, with a streak of shame, mostly when things were not good. In college, in pain over a high-school girlfriend who had been more family than family, ready to quit school and join the fire service to keep them together, he ran to Sands Beach at UC Santa Barbara and prayed for the ability to be as brutally honest with himself and other people as he could about the situation. He was not even sure he had the right to ask. The relationship ended; they are still friendly, she is married with a child. He was not asking for a magic hand. He was asking for help to come through him, so the body would do right action. Fridman notes the beauty of it: the private, slightly embarrassing childhood habit turns out, later, to have been part of you all along.

Fridman suspects that all the wisdom he needs was already there at eleven or twelve, then got cluttered over. Huberman thinks of children as less obscured: disappointment and exuberance arrive raw. Adults put on masks to function. A theory he has about men, the group he knows best, is that whether or not they show up strong, many are afraid of being weak — and the strength is sometimes a way not to be weak, which is different from strength for its own sake. That includes intellectual strength, money, and drive. Netflix's *Chimp Empire* is the parable he has been watching.

The aging alpha does periodic vigor displays: grab a branch, break it, thrash it, let the troop watch. Huberman's mind goes straight to people deadlifting on Instagram. It is a primate saying he still has what it takes to lead. Numbers two, three, and four have enough extra forebrain to notice that a display of vigor can also be an insurance policy against being seen as weak, because they have done the same thing in other contexts. In chimp society, affiliation is grooming — picking off parasites and eating them. Ostracism is simply leaving someone ungroomed until infection, isolation, and sometimes death follow. So two and three line up to groom the alpha while thinking about installing a new one. The current alpha got there the same way, so he knows the grooming might not be sincere. His move is advanced: he takes the whole troop on a raid against another troop and watches who will fight for him.

For a species we do not usually rank with us, that is sophisticated contracting of behavior. Dogs, by contrast, are a hundred percent overt with humans. They can learn that a look gets food, but they do not bank the behavior to undermine you later and take your job. Chimps plan. Humans take the same machinery to an extreme, costs included. The documentary is not a cute animal show for Huberman. It is a picture of the same split he is obsessed with in people: what is on the table, and what is being taken off the table in secret.

An overt contract is on the table: we do this work, you get this percentage, I get that one. A covert contract can look identical and still be poison. Secretly you are resentful of the split, so you start taking something else — a verbal jab, chronic lateness, a relationship with a coworker toward a new business. In romance the spoken deal might be: I make you feel powerful, you make me feel desired. If both know and both agree, Huberman has no objection. The danger is the person who says yes while not wanting the thing, then extracts compensation in the dark — kids as leverage, money as tribute, chores as scorekeeping. "Covert contracts are the signature of everything bad. Overt contracts are the signature of all things good."

People reach for the covert version when they do not feel safe. Naming the fear in the short term is harder than playing chess and Go at once, trying to compute every branch. The extra prefrontal cortex that makes us more sophisticated than a dog also lets us manufacture a false sense of certainty by taking something on the side. The only certainty in a covert contract, Huberman says, is that it ends badly. How badly is the open question. Overt contracts always end well — except you cannot be certain the other person is not running a covert one. You can only take responsibility for your own. Fridman puts the human problem plainly: the two contracts look the same on the surface, so you either leap and risk being hurt, or you wait cynically until trust is over-proven.

How much intelligence does a covert contract take? Apparently not much. Huberman's San Diego lab kept cuttlefish. If a shrimp faced them they did a tentacle display to "enchant" it, then struck; if the shrimp faced away they just grabbed. During a government shutdown they had to switch shrimp. The new ones had eyespots on their tails, and the cuttlefish ran the enchantment no matter which way the shrimp faced. In the cuttlefish mind the algorithm was: two spots, move tentacles. It looks diabolical. It is strategy B. Fridman says a superintelligent AI will say the same of us — circuit, algorithm A, algorithm B, trivial — while we write poetry about it. Huberman's reply is that AI cannot see our subconscious, because it cannot even see the under-workings of its own behavior, and the subconscious is the part we cannot see either. Maybe someday an AI coach will name the childhood algorithm. Until then, the work is still ours. He also rejects "history repeats itself" as a rule about people, because it does not apply if someone is actively resolving their flaws, going into the subconscious, and getting better at hard conversations. People can change. They have to want to.

Asked for relationship wisdom, Huberman starts with a definition. If you want a life partner — kids or not, pets or not — listen to people who are actually in long, happy, monogamous relationships. He names Joe Rogan among them, and several people on his own podcast team. The line that rings true over and over is: find someone who is really a great friend. Sex matters, of course, but it should sit alongside or inside the friendship, not replace it. What a successful relationship clearly requires is joy in being together, trust, a wish to share the mundane and the adventurous, support, acceptance, maybe admiration, and delight in the person's presence, even a quiet one — plus delight in watching them delight in things. Peace, earlier in the conversation, now has a face: you just really like being with them.

Covert contracts show up here as fear. People afraid of being betrayed betray. People afraid of giving too much vulnerability hide it, or, worse, feign it. Huberman's own habit was the typical one: attraction, then exploring every dimension quickly, short of moving in and having kids. That has not been the pattern of the people close to him who got into great relationships. They were friends for a while first, or they intentionally deferred sex. "Take it slow," as he now hears it, is not about getting to know someone slowly. It is about delaying the physical piece, because that piece changes the nature of the relationship. It plugs straight into hardwired circuitry around safety and vulnerability. Early on, people start doing assets-and-liabilities math — how much time, how much energy, how many other possibilities — and that is where complicated contracts breed. If friendship and admiration are already solid, even with real attraction, the sexual piece can be added later in a way that "seals up the whole thing."

There is no rule that you have to be attracted to all attractive people. Taste matters: a style, a way of being, including sex as a verb. When you really adore someone, you like the way they answer the phone, and when they do not answer it that way you know something is off and you want to know why. Tune up observation, stop hunting for a checklist, and you are more likely to fall in love. A mutual friend told him a line he has never seen violated: in romantic relationships, if it is not a hundred percent in you, it is not happening. "Mostly good" plus negotiations already means it is doomed. That is not a demand that the person or the relationship be perfect. It is a demand that it feel like yes, yes, and yes inside. Karl Deisseroth, on an earlier Fridman episode, talked about storying into love — constructing a future with someone and looking back at the time already shared. Huberman adds that love is also retroactively constructed. Anyone who has left a relationship they knew they should leave still misses pieces of it. That is attachment machinery, not a verdict that the yes was ever complete.

A happily married colleague on Fridman's team, already close friends with his partner after a strong sexual start — Huberman notes there are many paths to Rome — wants a daughter after a son, and asks whether position or anything else can stack the odds. Huberman recorded a four-and-a-half-hour fertility episode for a reason: reproductive biology fascinates him, and he wanted one place that put male and female sides together, IVF and natural pregnancy, all timestamped. Some clinics, some of them outside the United States, centrifuge sperm and pull fractions from different depths in the tube to bias male or female births. It is not perfect, it is expensive, and it is still controversial. With IVF you can inject a sperm by pipette (ICSI) or run a dish race, grow blastocysts, karyotype for XX or XY, and implant the embryo you want. That is actual sex selection.

Position lore — woman on top or bottom, penetration from behind — does not have great data, and the studies are swamped by variables you cannot control in bed: volume, forward-motile count, differences between ejaculations. What does have some support, for fertilization rather than sex of the child, is that the woman should not stand up immediately. After ejaculation, a pelvis tilted about 15 degrees upward for about 15 minutes uses gravity to keep semen from leaking out. Some fertility MDs call that crazy; others Huberman interviewed for the episode said that if people are trying to get pregnant, fifteen minutes on their back is a cheap experiment. On daughters specifically, papers he has read find that as fathers get older they are somewhat more likely to have daughters — significant, not huge. Each passing year also degrades egg and sperm quality. His practical line is: if you want a child, get after it soon. If you want to ensure a daughter, do IVF and pick an XX embryo.

He uses the question to puncture a few neighboring myths. Only about 3 percent of sexual dysfunction is hormonal. More of it is pelvic floor, vascular, or neural. Michael Eisenberg, head of male urology and sexual and reproductive health at Stanford, told him far less dysfunction is psychogenic than people believe. Hormones can hit desire, including via SSRIs, which is a different problem from anatomical function. The pelvic-floor error is especially common: people assume the floor is weak, find Kegels on the internet, and make a too-tight floor much worse. They need to learn to relax it, which is why he wants people with those symptoms to see a specialist. He thinks the next five to ten years will talk more plainly about shared embryonic origins of clitoris and penis, overlapping innervation, and a lot of what he is willing to call bullshit that has cloaked the topic.

Fridman calls Huberman one of the most productive people he knows and asks for the secret. Huberman says he struggles like everyone else, then describes a stack with no mysticism. It starts with a good night's sleep. If he wakes unrested he will do non-sleep deep rest — yoga nidra — or go back to sleep before the day's most important block. Sunlight, a little deadline anxiety, and the phone off. Peak hours are not to be invaded unless a "nuclear bomb" goes off, which he defines as a family emergency. Sitting at a desk for many hours is a weak metric. The variable is focus in the moment: how much total attention you can give. He walks, thinks, voice-dictates into a recorder, then has to learn to shut it off and be with people so he is not podcasting in his head for 24 hours.

The research is the bottleneck, and the hard part is finding the best papers, not decoding a single one: read reviews, see who is cited, call people in the field. A tenured friend now checks episodes; his niece has interned and found strong papers. He still does the primary research himself. Before recording he sculpts the whole episode on a whiteboard, gets the flow right, photographs the board, sets the bullet points on the desk, and talks to camera with no teleprompter. He is long-winded on purpose. Too much cutting produces clips that produce bigger misunderstandings. All three of his advisors are dead. He does not know when the reaper is coming, so he wants as much of the material out as he can. If listeners have to pause and come back a day later, that is a reasonable compromise.

In college, making up for having barely attended high school, he set a timer and would not get up to use the bathroom. At two hours he was in pain; then standing up felt extraordinarily good. The brain, he thinks, likes those friction points and the chemistry of passing through them. Joe Strummer's line is on the wall: no input, no output. He still watches *Chimp Empire*. He has also arranged a lot of life, including home life, around learning and teaching, which has sometimes been a barrier to a personal life. He is not telling anyone else to live that way. It is how he is showing up. Fridman admits he is stuck on solo-camera projects, including a long Hitler and World War II piece, partly because the camera terrifies him even though the writing does not. Huberman's first year of podcasting just spilled; he forgets the camera and tries to teach. The best Stanford lecturers he watched taught from mastery while experiencing the material as a first-time learner. Students lock onto the delight. Peace and focus, he later says, are intimate. Distraction is the enemy of both. A relationship that lets you drop into work without checking whether the other person is okay — because they are an adult and will say so — is the same skill as being fully present when you are with them, from sex to listening to tending a house.

It has been more than two years since Costello, the bulldog-mastiff, died. Huberman cried about him that day, and says he will cry again if he thinks about it. "It's proportional to the love." The death itself, at home in Topanga during the pandemic because the dog hated vets, was strangely beautiful: a huge exhale, a body that had been working so hard just to move. Huberman expected his heart to break. He knows that feeling — his parents splitting, Harry's suicide, Barbara's death, Ben Barres, and a brutal week at the end of 2017 when several friends died. When Costello went, his chest heated up. He was not on MDMA. He has been a pallbearer, including for his grandfather, and nothing like that had happened. He knows he is making up a story, but the story is: all that effort, you get it back. A giant thank-you.

For him the dog was the first real home he ever had. Eleven years, everything done to make the animal comfortable, the most complete love he had given without wrecking the rest of his life, and he felt he had actually done it. The caretaking, not what the dog gave him, was the point; the happier Costello looked, the better Huberman felt. A phone call with Barbara before she died, saying goodbye, especially with her kids in the picture, flipped a switch. He had always said he wanted kids. After that he said he wanted his own kids. Fridman tells him he cannot wait for him to be a father. Huberman says when God decides he is ready. He also tells Fridman to have children sooner: look at the tribal elders of their podcast circle, Joe Rogan, Peter Attia, Tom Segura. They all have kids, they all adore them, the kids bring tremendous meaning. They would be morons, Huberman says, not to. He has a story that Costello was handing something over: take this, and do not mess it up.

Fridman closes with Camus: in the midst of winter he found within himself an invincible summer. The through-line of the night is that inner weather. Trust the first signal from the body. Ask whether a trait or a contract lets you sleep. Name the iron rod someone else can see. Put the deal on the table. Become friends before you change the nature of the relationship. Guard the hours when you can actually pay attention. Give the people and animals you love full presence, not a body in the room and a mind on the phone. If it is not a hundred percent inside, Huberman's shortest sentence still stands: it is not happening.