Learn THIS And You’ll Become Impossible To Trigger
The Human Upgrade: Biohacking for Longevity & Performance
August 27, 2026
Jonny Miller on Nervous System Mastery, Grief, and Why High Performers Can't Afford to Stay Stuck in Their Heads Your nervous system is running every decision, relationship, and reaction in your life, and you won't notice how much it's costing you until something breaks.
Speakers Jonny Miller, Dave Asprey
TopicsHealth & FitnessEducationSelf-Improvement
Jonny Miller (0:00)
Most people haven't experienced an emotion without the clenching. The mistake that I made was mistaking calm on the surface for kind of not being triggered. When we're in this adrenalized, kind of sympathetic go-go-go state, the adrenaline and cortisol literally numbs the interception. So it's harder to listen to your body tickled with a feather, and then it's a brick, you lose your job, and then maybe the dump truck chronic health issue or something majorly breaks. I'm obsessed with freediving. I think of it as actually like high stakes meditation. There are significant non-trivial consequences if you clench 100 feet plus under water. For me, usually the tension is kind of my ****, it's like drop in there and then relax it, and then the breath can go and I can keep going down. One of the most effective ways to access deep parasympathetic is by having a weight on your ****, and I went from having a 90 second breath hold to six and a half minutes.
Dave Asprey (0:47)
Jonny Miller, he taught more than a thousand people how to master their nervous systems.
Jonny Miller (0:52)
So much of what I teach with Nervous System Mastery can be boiled down to, can you notice the tension, learn how to unclench.
Dave Asprey (1:00)
You're listening to The Human Upgrade with Dave Asprey.
Why won't your stress budge no matter what you do? You're doing the work, the cold plunge, the breath work, the supplements, and your nervous system is still running hot. Here's the problem. Every recovery tool you use only works when your body believes the threat is over. And if your nervous system never gets that signal, it stays in survival mode regardless of what you stack on top of it. The direct line to that signal runs through your vegas nerve. When you stimulate it, your parasympathetic nervous system activates. Your body shifts out of fight or flight and into the state where real recovery happens. ZenBud is the tool I reach for to make that shift happen. It sits on your ears like a headset and uses focused ultrasound to reach your vegas nerve directly. Just five minutes daily is all you need. In clinical studies, participants experienced significant improvements across stress, mood, and sleep after just four weeks of use. Many people notice it in their first session. Check it out at zenbud.health and use code DAVE15 at checkout for a discount. Your biohacks are only as good as your nervous system's ability to recover. This is the missing piece.
Modafinil is one of my favorite cognitive enhancers forever, and I've been taking it for more than 20 years, which is why this episode is brought to you by Mod. Mod prescribes a once or twice daily Modafinil drink that can keep you energized, focused, and alert throughout the day in a way you won't even believe. For the science nerds, here's how Modafinil works in my brain and probably yours. It's a wakefulness drug, not a stimulant, that works on several systems in your brain. It activates something called Orexin, which is your brain chemical that helps to keep you awake that isn't stimulant. Modafinil also increases dopamine, which is going to help you be motivated and focused, and it affects histamine and norepinephrine, which can help to keep you alert. Scientists figured this out in the 1970s when they developed Modafinil, and some of the highest performers on the planet, like me, have been using it since, well, about then. I only made it through Wharton Business School because I was taking Modafinil. You'll find soldiers, pilots, astronauts, even big figures in the government who are in high-stakes situations who use Modafinil because it actually works in many clinical trials. I've been talking about and using Modafinil for years. I broke the news about it on National News more than 15 years ago, and it's now available at mod.com to qualifying patients. Visit mod.com for a consultation, and you get 10% off your first order plus free shipping with promo code DAVE. This is my favorite pharmaceutical performance enhancer on the planet. If it's appropriate for you, the doctors at mod.com can help you get it. See their website for important safety information, and thanks Mod for sponsoring the podcast. Jonny Miller is the host of the Inner Frontier Podcast, and he taught more than a thousand people how to master their nervous systems.
We're going to talk about Nervous System Mastery, which is something that is critical for longevity. So if you're into biohacking, you're into longevity, and you think, oh, I take the right supplements, I intermittent fast, I've got my hot, my cold, my red lights, all this stuff, your peptides even, but your nervous system is just all over the place, you're doing it wrong. So we're going to go deep on that. Jonny, welcome to the show.
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