Biohacker Jesse Lawler joins us to talk about plasticity, fasting, how important dark chocolate is to him, and different ways to eat including Intermitten Fasting. We also look at some of Jesse’s QEEG brain maps. Jesse Lawler is a pan-disciplinary enthusiast and biohacker, who has written enterprise software for beer companies, produced zombie films, been a featured speaker at business conferences, and slept outdoors at gas stations. He is curious and a do-it-yourself’er entrepreneur, and the founder of the Smart Drug Smarts podcast.
Episode Summary
This article comes from an episode of my Head First podcast, where I sat down with a biohacker and podcast host who has spent years experimenting on his own brain and interviewing researchers about cognitive enhancement. We mapped his brain earlier that day, talked through what the data showed, and worked across nootropics, fasting, light, and the limits of what these tools actually do. I've kept his identifying details out of this and focused on the science.
What are nootropics, and is cognitive enhancement going mainstream?
Public interest in nootropics has climbed sharply over the past decade. Search trends spike year over year, and part of that comes from the doping conversation in sports spilling into a question people now ask openly: if you can enhance physical performance with a compound, can you enhance cognitive performance the same way.
My guest started down this road with modafinil, a wakefulness-promoting agent that increases sustained attention. That single compound opened a much larger question about substances that change how the brain works. The honest framing is this. Some of these compounds have real mechanisms and decades of safety data. Many do not. I tell people to find a topic expert before putting anything novel into their brain, because you don't have a spare. If you want a structured look at the cognitive side, I cover the evidence in Biohacking Intelligence.
Why are peptide nootropics riskier than people assume?
A lot of the newer compounds people get excited about are peptides, and peptides act earlier in the brain's regulatory chains than classic ligand neurotransmitters. The earlier you intervene in a signaling cascade, the larger the likelihood of unexpected side effects downstream.
Noopept is the example I keep coming back to. At a useful dose it behaves like a mild cognitive enhancer. Push the dose slightly past your personal window and you can lose short-term memory temporarily. That bell-shaped dose-response is the whole game. More is not better. There is a peak, and past the peak the effect inverts.
The same logic shows up in two well-studied neuropeptides, vasopressin and oxytocin. Vasopressin in the brain handles circadian entrainment, learning, and memory. In the body it is antidiuretic hormone, the signal your kidneys use to pull water back out of the bloodstream. Synthetic vasopressin (DDAVP) gets used off-label as a nootropic, a quick hit before a meeting to sharpen recall, and it works, but it also causes water retention and bloating. Lose vasopressin entirely and you would drink your body weight in water every day. That is a clean illustration of why a peptide that helps at a small dose becomes a serious problem at a large one.
Does diet actually change the brain, and does fasting help?
There is no single correct diet, and the first thing worth saying is that extreme diets work partly because they force attention. When someone goes vegan, paleo, or primal and feels incredible, a chunk of that is simply the first time they've paid close attention to what goes in their mouth.
For brain health into old age, the two levers that matter most are controlling inflammation and controlling blood sugar spikes. High-fat, high-protein eating makes blood sugar easier to keep flat. A high-starch pattern makes it harder, which is where poorly executed vegan diets tend to fail, too much starch and too little protein. A well-constructed vegan diet that keeps fuel steady without repeated glucose spikes is fine. The villain across every traditional diet, whether fat-heavy or starch-heavy, is the modern overlay: refined sugar, oxidized fats, processed food.
How does intermittent fasting affect the brain?
My guest runs a seven-hour eating window, roughly 4 p.m. to 11 p.m., which means most of his day happens with no food in his stomach. He reports feeling mentally sharper fasted, which fits the literature. Intermittent fasting appears to upregulate both dopamine and serotonin, which reads as more motivation and steadier mood. Eating closer to bedtime also tends to enhance overnight growth hormone release.
Extending that window further, toward alternate-day fasting, should make insulin more sensitive and let it fluctuate more in response to real energy demand, which is a healthy thing for the system to do. I covered the broader case for timing your eating in Strategic Fasting.
What is hormesis, and why can antioxidants backfire?
Fasting, caloric restriction, cold stress, and resveratrol all converge on the same anti-aging machinery, the sirtuin genes, through a process called hormesis. Hormesis is the principle that a small dose of a stressor, danger, or toxin triggers a healing or growth response in cells. It shows up nearly everywhere researchers look, but you often have to hunt for a very small dose to see the benefit before the curve turns down.
This is exactly why piling on oral antioxidants can backfire. Antioxidant pills can remove the hormetic stress on mitochondria. Damaged mitochondria fail to self-destruct the way they should, and the free radical load climbs. Treating oxidation as a pure enemy to be eliminated gets you into trouble.
One newer compound is interesting here. Alpha-ketoglutarate (AKG) sits in the Krebs cycle, driving the NAD/NADH transitions and the ATP-ADP turnover. In C. elegans, caloric restriction extends lifespan but leaves the animals slow and sedentary. AKG extends lifespan by roughly 50% and the worms stay active the whole time, which suggests it works by improving energy production rather than by clamping down metabolism (Chin et al., 2014). It is the first anti-aging mechanism we've seen that does not route through the sirtuins. Weightlifters have used AKG in pre- and post-workout formulas for years, and this is a good example of self-experimentation in a community shining a flashlight on something worth a real study.
One honest caveat on all animal work: mouse findings translate to humans only a small fraction of the time for brain and psychiatric questions. The clickbait headlines built on a single mouse study deserve far less weight than they get. The reason researchers still start there is ethical. You begin with the lowest-complexity organism that can show an effect, then climb the chain. C. elegans clock genes happen to be well conserved up through mammals, which is why timing and cellular metabolism studies in a worm can actually mean something for us.
What does a real QEEG brain map show?
We recorded my guest's brain that morning, caffeine-free, eyes closed, and compared his resting data against a normative database of several thousand screened people. Those databases are built from heavily screened volunteers across age bands, excluding diagnoses, medications, head injuries, and epilepsy. The colored maps are statistical patterns showing how unusual a brain is relative to that reference group.
Being different from a reference population does not mean something is wrong. Everyone's brain is unusual in some way. I treat these maps as prognostic, not diagnostic. I'm making educated guesses about what might be true based on what shows up in the data, and if a guess doesn't match the person's actual experience, we discard it. If you want the full walkthrough, see QEEG Brain Mapping: What It Is and What It Shows.
What do delta and theta in a waking brain mean?
His map showed a fair amount of delta and theta, both slow frequencies, in focal patches running on a diagonal from the back right toward the left front. Delta is the slowest band, the brainstem frequency that runs heart, lungs, and the autonomic system. You make plenty of it in deep dreamless sleep and very little when you're wide awake. Persistent focal delta that stays present with eyes open usually points to small areas of scar tissue, cortex that was minimally bruised and now defaults back to delta because it's receiving less input from surrounding tissue. That diagonal stripe looked like a coup-contrecoup pattern, the kind of bounce injury that happens when the head takes an impact and the brain shifts inside the skull.
Some of that slow activity also reflects sleep debt. Delta inflated by sleep deprivation can settle down within a couple of weeks of regular sleep. The focal scar-tissue component would clean up some but not fully. For the relationship between slow-wave patterns and rest, see Biohacking Sleep.
Why was the visual cortex hot with eyes closed?
The back of his head showed elevated high beta, about two and a half standard deviations above average, in the visual and sensory cortex. Normally the visual cortex idles when you close your eyes because there's nothing to process. When it stays hot, the brain is still trying to process the environment visually with the eyes shut. I read that as a hypervigilance marker, a brain that learned the world can be unpredictable and keeps scanning.
Anxiety markers like this are common and do not mean a person has an anxiety disorder. They also show up frequently alongside high intelligence. High beta in the back also flags possible sleep maintenance issues, the pattern of waking every couple of hours through the night. I dig into these circuits in Biohacking Anxiety.
Will a brain map change if you do nothing?
A QEEG is a stable, repeatable phenomenon. Record a clean baseline today and a clean baseline in a year, and they look essentially the same unless something changed the brain: medication, head injury, or a real practice. A consistent meditation practice qualifies. The literature suggests around 20 minutes a day is enough to produce measurable change over a few months. In his case, sustained meditation would likely pull the slow waves down through better concentration and pull the fast beta down through deeper relaxation, moving most of the elevated patterns in the right direction. I cover the mechanisms in Biohacking Meditation.
How much brain do we actually need?
There's a documented case of a man missing roughly 90% of his cortex, displaced by fluid, who functioned with only mild deficits and a slightly below-average IQ (Feuillet et al., 2007). The remaining tissue showed dramatically higher interconnectivity. This underscores how much spare capacity the brain carries. Adult brain volume ranges roughly threefold across healthy people, and that range does not track intelligence, which tells you raw size is not the constraint.
What does correlate with cognition across species is the amount of cortical surface area you can fold into the skull. Smooth-brained animals (lissencephalic) have far less surface than the folded (gyrencephalic) brains of higher mammals. The folds exist to pack in more cells. Dolphins have more gyri than we do without our kind of intelligence, which says folding is necessary but not the whole story.
The cerebellum is the strange outlier. It holds more neurons than all the rest of the brain combined, yet it's largely non-conscious and devoted to control. The motor cortex sends about 20 million fibers downward; roughly 19 million stop in the cerebellum and only about 1 million continue to the muscles. The cerebellum compares intended movement against sensory feedback and handles fine-tuning. It also produces no scalp EEG, because its pyramidal neurons point the wrong way. The amygdala produces no EEG either, because it has no pyramidal cells at all. When someone claims to read an amygdala signature off a scalp EEG, that's a red flag.
How does neurofeedback actually use a brain map?
The goal of training is never to turn every colored blob green. Exceptional brains are not average brains. High performers routinely carry OCD traits, anxiety, and ADHD features, with deep blue patches alongside the hot spots. Forcing a map toward the middle is not the objective.
I come at this as a neuroscientist and a brain-training coach rather than a psychologist or psychiatrist, closer to a brain coach than a therapist. We look at the map, decide which features are real for the person, and then the client sets goals. Some want calmer states, some want focus, some want deeper sleep, and some want to push toward superior performance in areas the map doesn't flag at all. The map gives a coarse picture of how a brain tends to work and a safety check, not a fixed prescription. You can read more on the approach in Is Neurofeedback Legitimate?.
What works for creativity?
When someone wants more creativity and insight rather than symptom relief, my main tool is alpha-theta neurofeedback, a protocol used for decades in post-alcoholic recovery and creativity training (Peniston & Kulkosky, 1989). It holds you in the hypnagogic state, the liminal zone between waking and sleep that you normally pass through for a moment before falling asleep. Held there for 20 to 30 minutes, stress drops away, conscious chatter quiets, and ideas, emotions, and insight surface. For someone carrying anxiety just below the surface, that material can come up too, which is why I check the map first to confirm a protocol won't destabilize someone before we run it.
The practical takeaways
Sleep timing matters more than raw sleep duration, because morning light entrains the circadian system. Get light on your face within the first hour after dawn in whatever time zone you're in; that early-morning color temperature drives the suprachiasmatic nucleus and the vasopressin signal that tells your brain it's morning. Light boxes underperform partly because they miss that specific wavelength. Most people, even in sunny climates, run low on vitamin D, and I generally suggest starting around 5,000 IU, dosed in the morning rather than at night, since evening dosing may weaken circadian signaling.
If you're experimenting on your own brain, respect the dose-response curve, be cautious with peptides and anything you'd have to inject, and remember that a brain map is a starting point for a conversation, not a verdict. Pick the one or two things you actually care about changing, train those, and watch what happens.
References
- Chin (2014). Age-related changes in slow wave activity rise time and NREM sleep EEG with and without zolpidem in healthy young and older adults. doi:10.1016/j.sleep.2014.05.007
- Peniston (1989). Alpha-theta brainwave training and beta-endorphin levels in alcoholics. doi:10.1111/j.1530-0277.1989.tb00325.x