Power Posing: Recent Studies Confirm Nothing

Does power posing work? The short answer, based on the strongest evidence available, is no, not the way you were told. The original 2010 claim, that standing in an expansive, open stance for two minutes raises your testosterone, lowers your cortisol, and makes you genuinely feel more powerful, has failed to hold up across three separate attempts to reproduce it, including a 2024 replication using modern methods. The pose itself isn't fake, and confidence isn't fake either, but the hormonal mechanism the whole theory was built on doesn't seem to exist. This isn't a small, disputed footnote in the research either. It's one of the clearer cases in psychology of a single viral idea outrunning the actual evidence for it, and the evidence catching up years later and quietly failing to agree. Here's what the original study actually claimed, why it became one of the most-watched TED talks in history before anyone checked the numbers twice, what the replications actually found when other labs tried, and what to do instead if you want people, and yourself, to actually read you as confident.

The Two-Minute Pose That Became a TED Talk Phenomenon

In 2010, a study led by social psychologist Amy Cuddy proposed something almost too good to be true: hold an expansive, open posture, feet planted, hands on hips or arms stretched wide overhead, for two minutes before a stressful situation, and your body chemistry would shift in your favor. The claim was that the pose raised testosterone, the hormone associated with dominance, lowered cortisol, the stress hormone, and increased how powerful people said they felt afterward. Cuddy's TED talk on the idea went on to become one of the most-watched TED talks ever recorded, and the pitch made sense at a gut level: your body language wasn't just supposed to broadcast confidence to other people, it was supposed to manufacture it internally, on command, in two minutes, before a job interview or a big presentation. That's an extraordinarily appealing idea. It hands you total control over something that usually feels uncontrollable, and it does it with a ritual you can perform alone, in private, with no witnesses and no risk of looking foolish in front of anyone. Two minutes in a bathroom stall or an empty stairwell, and you'd walk out of the negotiation or the interview chemically primed to win it. It's easy to see why that idea spread faster than almost any other finding to come out of social psychology in the last two decades, and why it kept getting repeated in career advice, corporate training decks, and casual conversation long after the first cracks in the evidence appeared. It also turned out to be, at minimum, seriously overstated.

What Happened When Other Labs Tried to Reproduce It

Independent replication is the actual test of whether a psychology finding is real, not how viral or intuitive it feels. In 2019, researchers Metzler and Grèzes ran a rigorous version of the original design with 82 men, measuring the same three hormones the original study cared about. The result: no effect of expansive versus constricted postures on testosterone, cortisol, or progesterone. Not a smaller effect, not a trend in the right direction that fell just short of significance, no measurable effect at all. That's about as clean a null result as replication research produces, and it directly contradicts the hormonal mechanism the entire "power posing changes your body chemistry" idea rested on.

The Real-World Test Made It Worse for the Theory

If a lab setting felt too artificial to matter, a separate study by Smith and Apicella tested something closer to real stakes: 247 participants, split between winners and losers of an actual physical competition, with postures and hormones measured around the event itself. This wasn't a room full of strangers awkwardly holding a pose for a researcher, it was real competitive pressure, exactly the kind of moment power posing is supposed to help with most. The result again: no main effect of pose type on testosterone, cortisol, risk-taking behavior, or self-reported feelings of power. Two very different research designs, a controlled lab manipulation and a real competitive event, converged on the same answer.

The 2024 Replication That Closed the Door, Mostly

A 2024 replication by Barel and colleagues, published in BMC Psychology, used newer methods and a fresh sample to check whether earlier replications had somehow missed something. It confirmed the same absence of effect on testosterone and felt power that the 2019 and 2017 studies had already found. There was one narrow exception: among people assigned to the high-power pose, a drop in cortisol was associated with greater tolerance for risk. That's a real, specific, small finding, not a broad "power posing changes your hormones and makes you feel powerful" effect. It's the difference between "this one narrow thing might be worth studying further" and "the theory as originally sold is correct." After three independent replications spanning lab and real-world settings, the second reading is the one the evidence supports.

Why the Original Study Looked So Convincing

None of this means the original researchers were being dishonest, and it doesn't mean everyone who's ever felt steadier after standing tall was imagining it. What it means is that a single, relatively small original study got amplified by a wildly popular TED talk faster than the normal scientific process, other labs trying to reproduce it, could catch up. That order of operations, viral idea first, replication years later, shows up constantly in psychology and explains a lot of "the science changed" headlines that aren't really the science changing, they're the science finally catching up to a claim that spread before it was tested properly. Early, single studies in behavioral science also tend to report larger effects than later replications find, a pattern well documented enough that researchers now treat any single unreplicated finding as a hypothesis, not a conclusion, until independent labs confirm it. A handful of factors tend to compound in that gap: a smaller original sample has more room for a lucky, or unlucky, draw of participants, a novel and attention-grabbing result is more likely to get published than a boring null one in the first place, and once a finding is famous, later researchers who fail to replicate it face a much higher bar to get taken seriously than the original team did. None of that requires anyone to have acted in bad faith. It just means the version of a finding that goes viral is, structurally, the version most likely to be an outlier rather than the reliable average.

What Actually Survives the Debunking

Throwing out the hormone story doesn't mean posture is irrelevant to how confident you come across, it means the mechanism was wrong. A completely different line of research, unrelated to Cuddy's hormone claim, has consistently found that posture shapes how other people respond to you. When someone reads a dominant, open posture from another person, they tend to respond with a more submissive, deferential posture of their own, a complementary response that research from Tiedens and Fragale found actually makes the interaction feel more pleasant and makes the dominant person more liked, not less. That's a real, replicated social dynamic. It's just a completely different claim than "standing like a superhero changes your cortisol." Posture is a signal other people read and respond to in real time. It was never a private hormone switch you could flip alone in a bathroom stall before a meeting.

What Actually Builds the Confidence People Read in You

If the real goal was never hormones, but reading as confident and capable to other people, and to yourself, the research on what actually works is far more specific than "strike a pose." None of it involves standing a certain way alone for two minutes.

• Lower, more resonant voice register when the context allows it: both men and women consistently prefer lower-pitched voices in leaders, for candidates of either sex; an analysis of the 796 candidates measured in the 2012 U.S. House elections found that lower-pitched voices won a larger vote share against male opponents, with the advantage reversing against female opponents.
• Clear articulation over mumbling or trailing off: distinct, well-formed speech is linked to higher perceived social status, independent of what's actually being said.
• A steady, confident pace rather than a slow, hesitant one: a faster, assured speech rate increases how credible and persuasive a message sounds, regardless of how complex the content actually is.
• Hand gestures that actually illustrate what you're saying: shown across more than 2,000 TED Talks and confirmed in controlled experiments, gestures that map onto your words make a speaker read as more competent and more persuasive than either frozen hands or random movement.

None of this requires faking anything, which is really the throughline of the whole story. The version of confidence that holds up under replication isn't a hormone trick you perform alone before walking into a room, it's a small set of observable, practiced behaviors, voice, articulation, pace, gesture, posture that responds to other people, that you can actually work on and that other people actually notice. It's slower than a two-minute power pose promised to be, and it's real.

How to Actually Use What's Left of This

If you still want a two-minute routine before something high-stakes, use the two minutes differently than the original claim suggested. Instead of holding a fixed pose and waiting for your hormones to reorganize themselves, run through the behaviors that are actually supported: drop your speaking pitch slightly and let it settle there rather than rushing back up under nerves, slow your pace down a notch from where anxiety normally pushes it, and rehearse the specific gestures you'll use to make your key points land. That's not a mystical ritual, it's closer to a warmup, the same way an athlete doesn't expect two minutes of stretching to change their hormone levels, only to get their body ready to perform the skill they've already trained. The posture part still matters too, just for a different reason than advertised: standing open rather than hunched changes how the other person in the room responds to you in real time, which is a social effect, not a private biochemical one, and it only works if the voice and pace behind it back it up.

There's also a physical layer underneath all of this that's easy to overlook: how put-together and healthy you look changes how competence and warmth get read before you've said a word, the same halo effect that makes a superhero stance feel like it should work even when the hormones don't back it up. That's the layer HALOIA is built around, tracking how your nutrition, sleep, and habits actually show up in your skin and physique, so the physical baseline underneath your voice and posture is working with you instead of against you. If you want a quick read on where that baseline stands today, HALOIA's free appearance quiz is a fast starting point.