Episode Summary
I joined the show "You Meditate… But Are You Actually Growing?" to talk about something that comes up constantly in my clinic: people who sit every day for years and have no clear way to know whether anything is changing. You can watch the original conversation for the full discussion. What follows is drawn from my side of that conversation, expanded with the mechanisms underneath the claims.
We have taught meditation for thousands of years, so why isn't everyone enlightened?
Humans have been training attention, inhibitory tone, sleep regulation, and stress resilience for five to ten thousand years. The practices are old. The promised outcomes are old too. If sitting reliably produced enlightenment, abs, or freedom from suffering, the accumulated practice hours of human history would have delivered all three by now.
They have not. That tells you something useful about what meditation does and does not do. A practice is a tool that acts on specific circuits. Tools produce outcomes when you aim them at a target and measure whether you hit it. When you pursue the practice for its own sake, you can log thousands of hours and drift, because you never defined what should change.
I see this in people who have meditated for a decade and still wake at 3am with their right frontal cortex scanning for threat. The hours accumulated. The circuit they needed to train was never the one the practice was touching.
What does meditation actually do to the brain?
Regular practice produces measurable changes. Sustained attention training is associated with thicker prefrontal cortex over time, which supports emotional regulation, and with quieter default mode network activity, the network tied to mind-wandering and self-referential rumination. These are real structural and functional findings from neuroimaging work, and they are encouraging.
The mechanism is plausible: when you repeatedly bring attention back to a target, you exercise prefrontal control circuits and you reduce the dominance of the default mode network. Over months, the brain reallocates resources toward the circuits you keep using. This is neuroplasticity working the way it works everywhere else in the nervous system. If you want the broader picture of how that adaptive capacity gets trained, I cover it in biohacking plasticity.
Here is the honest framing on evidence strength. The structural changes are reasonably well supported across studies. The leap from "thicker prefrontal cortex" to "this person's anxiety resolved" is weaker, and it depends heavily on who is meditating and what their baseline brain looks like. I walk through the neuroscience of mindfulness training in more depth in biohacking meditation, and the practical side in Mindfulness: Don't Just Do Something, Sit There.
Why does meditation make some people's anxiety worse?
This is the part that gets people into trouble. Most popular meditation is concentrated attention practice. It is not relaxation training, even though it gets sold that way.
For a dysregulated nervous system, concentrated practice can amplify the dysregulation. If your right frontal cortex is already over-activated and your amygdala is already running hot, sitting quietly and turning attention inward gives that circuit an open field. The threat-scanning gets louder, not quieter. Some people with anxiety disorders report worse symptoms after intensive practice, and a subset have genuinely destabilizing reactions to retreat-style intensity.
I treat this as a clinical observation backed by the mechanism rather than a settled randomized-trial result. But the mechanism is clean. Concentration loads the prefrontal control system and the self-referential network. If those systems are already strained, you are adding load to a circuit that needs less. For these people I often start somewhere other than concentration. If you recognize your own pattern here, the circuit-level breakdown is in biohacking anxiety.
How do you know if your practice is actually working?
The questions worth asking are concrete. Where is your suffering, and is it less than it was? Where is your resilience, and is it greater? Where is your growth, measured against something you can name?
The tools matter because they move those numbers, not because the practice itself is a magic box. A meditation habit is valuable to the degree that it reduces your reactivity, improves your sleep, or lowers your baseline arousal. If you can name the target and track it, you can tell whether the tool is working. If you cannot, you are accumulating hours.
Pick a measurable. Sleep onset latency. Heart rate variability in the morning. The number of times a week a small frustration spirals into a bad afternoon. Track it for eight weeks while you practice. The data tells you whether to keep going, change the practice, or change the tool entirely.
When is neurofeedback a better fit than meditation?
For people who cannot sit, or whose nervous systems get worse when they try, I often reach for neurofeedback instead. The reason is the learning mechanism.
Meditation asks you to consciously hold a state. Neurofeedback works the other way. You receive a visual or auditory signal when your brain naturally produces the pattern you are training, and the learning happens largely below conscious awareness. You are not forcing a brain state. You are getting rewarded when it shows up, and the brain increases how often it produces it. That makes it accessible to people who struggle with the deliberate effort meditation demands.
SMR training is a good example. Sensorimotor rhythm sits around 12 to 15 Hz over the sensorimotor strip, and training it strengthens inhibitory control between the thalamus and cortex. That same thalamocortical circuit generates sleep spindles through the thalamic reticular nucleus. Training SMR during waking exercises the machinery your brain uses to filter irrelevant input and to hold physical stillness, which is why it shows up in better sleep and better self-control. I break this down in SMR neurofeedback.
Alpha training is another. Whether someone responds to alpha neurofeedback is predictable from their baseline EEG with roughly 86 percent accuracy, and the mechanism is an increase in the incidence rate of alpha rather than a brute increase in amplitude. That predictability is why I start with a QEEG brain map. The map tells me which circuit is over- or under-allocated before I pick a training target, and it tells me whether this person is likely to respond at all. If you want the research-overview version, see is neurofeedback legitimate.
Can mindfulness help with cravings and habits?
Yes, and here the mechanism is specific. Urge surfing is a mindfulness technique where you observe a craving without acting on it and let it peak and subside. The skill you are building is tolerating the activation in the reward circuitry without converting it into behavior. Each time you ride out an urge without acting, you weaken the link between the dopamine signal and the action that usually follows it.
This is one place where the standard mindfulness toolkit earns its keep, because the target is clear and the feedback is immediate: the urge either ran your afternoon or it did not. I write more about applying this to habits in biohacking bad habits.
What should you take from this?
There are dark corners left in both the science and the spirituality of meditation, and I do not pretend to have mapped all of them. For your own practice, that uncertainty matters less than it sounds. You do not need a complete theory of consciousness to run a clean experiment on yourself.
Define what should change. Pick one measurable. Run the practice for eight weeks and look at the number. If it moved, keep going. If it did not, change the practice or get a brain map and train the circuit directly. A practice that reduces your suffering and builds your resilience is worth your time. A practice you cannot measure is worth a closer look.