It’s a standard presentation at work. You’ve prepared fully. You start to speak.
Everyone is looking at you.
Your heart starts racing. Your hands tremble. Your stomach starts to churn.
“How can I stop this?” “How can I get ready to speak so that I don’t feel these sensations?”
You can’t. (Sorry.) But it’s not a defect. There’s nothing wrong with you. Our nervous system is wired to respond to danger.
Without this danger response, our species likely wouldn’t have survived long enough for you to give a presentation at work.
The Usual Advice
You’ve heard this advice. We all have. “Take a deep breath.” “Calm your nerves.” “Just relax.” As if the racing heart, the shaking hands, the churning stomach…as if all of that is a problem to be solved before you open your mouth.
I’m here to tell you something different: you cannot stop it, and you shouldn’t want to (more on that later).
The single most damaging piece of advice I see circulating is the idea that with enough preparation, enough visualization, enough mindfulness, enough breathing, you can speak in front of a group of people while feeling serene.
You can’t. And every time someone tries and fails, they don’t just feel nervous — they feel broken. Like everyone else figured out the secret and they’re the only one still trembling.
You’re not broken. You’re a human being with a functioning nervous system. Let me show you what’s actually happening inside you, and why it’s not your enemy.
Your brain can’t tell the difference
Deep in your brain sits the amygdala. It detects threats and sounds the alarm. And it doesn’t distinguish between a hungry lion and an eager audience. Seeing your audience looking at you registers as a genuine threat, because for most of human history, the judgment of your social group was a matter of survival. Rejection from the tribe meant death. So our danger response isn’t just for physical danger — it’s for social danger as well.
So when you start to speak — whether it’s just to your boss, your team, or a large room full of people — your amygdala does exactly what it is supposed to do: it pulls the fire alarm. And it triggers two parallel responses, one fast and one slow, that together produce every sensation you’ve been told to “overcome.”
The fast track: the adrenaline surge
The amygdala sends a signal directly through nerve pathways to your adrenal glands, which dump adrenaline into your bloodstream. This happens in seconds.
This is the racing heart. The sweaty palms. The trembling hands. The dry mouth. The butterflies in your stomach. That’s the adrenaline.
Breathing exercises beforehand, positive visualization, and mantras will not stop a signal that travels faster than thought. No amount of preparation prevents this from happening. That signal is caused because people are looking at you. The trigger is external, not internal.
If you’ve been doing all the “right” things and still feeling the surge, that’s not failure. That’s your body working exactly as intended. Experience and practice do reduce the heights of this response over time. But reduced is not “eliminated.” Even experienced speakers feel it. They don’t prevent it — they learn how to use it.
The slow track: the cortisol wave
The second response is slower and more subtle. Here, the hypothalamus signals for the release of cortisol, which sustains the stress response over minutes and hours. It keeps us going until we’re out of danger. One of the things that cortisol does is narrow your cognitive focus to the threat.
That tunnel vision, the inability to think on your feet, the feeling that your brain has gone rigid and small? That’s cortisol working.
Unlike the adrenaline surge, the cortisol response builds gradually. The hypothalamus decides how much signal to send, and that decision unfolds over a window of minutes. There is room there to lower the volume on cortisol.
Where breathing actually helps (and where it doesn’t)
Here’s where I part ways with the conventional advice — not because breathing techniques are useless, but because they’re useful for different reasons than people think.
Slow diaphragmatic breathing stimulates the “rest and relax” system, the twin sibling of the “danger” system. It has direct connections to the hypothalamus, so when you spend five or ten minutes doing slow breathing before you speak, you’re not bringing yourself into some kind of zen state. You’re loading a competing signal from the parasympathetic nervous system so that when the amygdala fires, the hypothalamus receives “danger” and “safety” messages simultaneously — and produces less cortisol as a result.
Research suggests this can reduce the cortisol peak meaningfully. A lower cortisol peak means less tunnel vision, less cognitive rigidity, and more presence of mind to manage yourself once you’re actually speaking.
But here’s what the breathing does not do: it does not prevent the adrenaline hit. Your heart will still race. Your hands may still tremble. Your stomach will still churn. If you start talking expecting that the breathing has made you calm, you will feel betrayed by your own body.
So what do I do?
You can’t stop the adrenaline and its very real physical effects. You can’t completely stop the cortisol and its effects. You can’t just “calm down”. And you can’t stop people from looking at you while you’re speaking.
But you can change how you work with these sensations.
The physical sensations of anxiety and excitement are nearly identical. They are the same sensations a sprinter feels at the starting line. They don’t have to be a sign that something is wrong. They can be a sign that your body is getting ready to perform.
Research bears this out: people who reframe their pre-performance nerves as excitement consistently outperform people who try to calm down. “Calm down” contradicts what the body is obviously doing. “I’m excited” rides the same physiological wave without fighting it.
A friend of mine calls this “making friends with the butterflies.” I love that phrase because it captures exactly the right attitude. You’re not trying to chase the butterflies away. You’re not pretending they aren’t there. You’re acknowledging them and letting them do what they came to do — which is to give you energy.
You wouldn’t really want to be zen when speaking…you want the energy the danger response provides you! (Told you that you wouldn’t want to stop it.)
You will feel it. Every time. The adrenaline will come, and no technique, no hack, no amount of experience will make that disappear entirely.
But that’s not a flaw in the system. It’s your body working. The same machinery that makes you nervous is the machinery that makes you vivid, present, and alive in front of an audience. A speaker with no adrenaline is a speaker with no spark.
