When it's your turn to present, the alarm in your brain fires and your body releases stress hormones, including cortisol. These hormones are part of the fight-or-flight response that speeds your heart and makes your mind go blank. Cortisol is a useful marker: when it falls, that response is firing less.
Why does your body take over when it's your turn?
You know your material. You've prepared. Then someone says "over to you," and your body has other plans.
There's a well-understood reason for that. Your brain has an alarm system called the amygdala. Its job is to spot threats and react fast, before you've had time to think. When it decides the room is a threat, it fires.
Once it fires, the part of your brain that finds the words goes quiet. Your body gets ready to fight or run, even though you're only standing in front of colleagues.
For a lot of people it doesn't wait for the moment itself. It starts while they wait their turn around the table. Sometimes it starts days before.
- Heart racing
- Mind goes blank
- Voice shakes
- Shallow breathing
- Dry mouth
Where does cortisol fit in?
When the alarm fires, your body releases stress hormones, including cortisol. They're part of the fight-or-flight response that speeds your heart, shortens your breath and makes your mind go blank.
Cortisol doesn't cause all of that on its own. Other hormones do much of the work. Cortisol still tells you a lot, because researchers can measure it. When cortisol falls, it's a sign the response is firing less.
That makes cortisol useful when you ask whether something actually changes the reaction. "I felt a bit calmer" is hard to measure. A change in a stress hormone is a clearer signal.
Why don't practice and experience switch it off?
Most presentation help works on delivery. It covers where to pause, what to do with your hands, how to structure your slides and how much to rehearse. That advice is fine. It just points at the wrong thing.
The reaction is learned. It usually comes from a belief or a specific past moment. You might fear being judged. You might feel you need to be perfect. You might doubt you belong in the room. Your nervous system has linked presenting with danger.
Experience teaches you how to present. It doesn't teach your nervous system that the room isn't a threat. That's why senior people with years of practice can still feel their throat tighten when the video call goes quiet and every face turns to them.
I spent 15 years in nuclear power, where performing under pressure wasn't optional. What I found is that most people were being given delivery fixes for something that's happening in their body.
Experience teaches you how to present. It doesn't teach your nervous system that the room isn't a threat.
What helps the reaction fire less?
Work on the reaction itself, not the delivery. EFT is a technique that works directly on that automatic response. It has been tested in nearly 100 randomized controlled trials. In EFT studies that measure cortisol, levels came down after one session.
In sessions, we work on what's behind the reaction for you. That might be fear of being judged, needing to be perfect or doubting you belong in the room. Each time, the link weakens, until it stops firing.
You don't need new skills. You already have the knowledge, experience and expertise. Once the reaction settles, you can use all of it.
What does the research say?
When your body treats a room as a threat, it releases cortisol, the body's main stress hormone, and researchers use it as a standard measure of how hard that response is running.
EFT has been tested in nearly 100 randomized controlled trials. In two studies that measured cortisol, one session brought it down by roughly 25 to 45 percent.
Two points to keep it honest: cortisol also dips a little when people simply sit quietly for an hour, so the comparison groups matter, and in both studies they fell by less. And the studies came from researchers within the EFT field, although the second was a different team repeating the first.
More on the research, and how a session works, is on the What is EFT page.
Sources: Church, Yount & Brooks (2012); Stapleton, Crighton, Sabot & O'Neill (2020).
Questions people ask
Does cortisol make my heart race when I present?
Not on its own. Cortisol is one of several stress hormones your body releases when the alarm in your brain fires. Together they drive the fight-or-flight response. Cortisol matters because researchers can measure it. When it falls, it's a sign that response is firing less.
Will this make me a better speaker?
Not in the way you might expect. EFT doesn't teach you new skills, because you already have them. It helps you feel comfortable and confident when it's your turn. That's what lets you present the way you know you can.
Why do I still get nervous after years of presenting?
Experience and the reaction work on different things. Practice builds your skill. The reaction is a learned link between presenting and threat, and practice doesn't undo that link. That's why plenty of experienced professionals still dread their turn.
Is this only for big speeches?
No. It's for everyone who presents at work. That includes team meetings, introducing yourself, video calls and being asked to speak with no warning. The reaction can show up in any of these, so the work applies to all of them.
If you recognize yourself in this
You can talk it through with me on a free call.
Book a free call Free, on Zoom. By the end of it you'll know whether this is right for you.Written by James Lancastle, The Tapping Journey. I spent 15 years in nuclear power, where performing under pressure wasn't optional. I now work one-on-one with professionals who know their material inside out but whose body takes over when it's their turn to present.
Last updated 29 October 2026.
