You're third on the agenda. The person before you is wrapping up, and you can feel your heart hitting the inside of your ribs. It's loud enough that you're sure the person next to you can hear it. Then your name is called, you stand up, and it gets faster.
Most advice on this says "take a deep breath" and moves on. That's half right. A big gulp of air on the way in can actually push your heart rate up a little. It's the slow breath out that brings it down. Getting that detail right is the difference between a breathing trick that works and one that leaves you more wound up than before.
This guide sits under how to overcome fear of public speaking, which covers the long-term fix for speaking nerves. It's a sibling of how to stop shaking when presenting, how to stop sweating when presenting and how to stop your voice from shaking when speaking. Same adrenaline, different part of you.
The sequence, in order:
- Know why your heart races, so the sensation stops feeling like a warning.
- Cut the things that add to it on the day: extra caffeine, an empty stomach, sitting still.
- In the last five minutes, breathe with a long exhale to slow it directly.
- Relabel what's left as readiness rather than danger.
- Script your first three sentences, because the first minute is the peak.
- Mid-talk, use pauses as built-in exhales.
- Know which signs mean a doctor, not a breathing exercise.
Why does my heart race when I speak in public?
Your heart races because your brain treats a room full of watching faces as a possible threat and releases adrenaline. Adrenaline makes the heart beat faster and harder so your muscles get more blood. It's the same fight-or-flight response that also causes shaking hands, sweating and a dry mouth.
Nothing about this is a malfunction. Your body is getting ready to do something effortful, and from a nervous system's point of view, standing in front of people while they judge you counts. The trouble is what happens next. You notice the pounding, decide it means something is wrong, and that thought adds a second dose of alarm on top of the first. A lot of what people describe as their heart "getting out of control" is that loop: sensation, worry about the sensation, more sensation.
That's why the fixes below come in two kinds. Some lower the heart rate directly, through breathing and movement. The others break the loop, so a fast heartbeat stays a fast heartbeat instead of turning into panic.
Is it normal for your heart to race when public speaking?
Yes. A faster heartbeat before and during a talk is close to universal, including in people who speak for a living. The Cleveland Clinic puts the share of people with some degree of public speaking anxiety at around three in four (Cleveland Clinic), and a racing heart is among the most common signs.
What changes with experience is the shape of it, not whether it happens. Researchers who tracked 96 speakers' physical stress at four points around a speech found two different patterns (Witt et al., Southern Communication Journal, 2006). Lower-anxiety speakers felt worst just before starting and settled once they were underway. Higher-anxiety speakers peaked about a minute into the talk. Either way, the first minute is the hard part. If you can get through it, your body usually follows.
Can the audience hear or see your heart pounding?
No. You feel your heartbeat from the inside, through your chest, neck and ears. From three metres away there's nothing to see or hear.
This has been tested in a related form. In Savitsky and Gilovich's 2003 study at Cornell, people gave short impromptu speeches and then rated how nervous they thought they'd looked. Observers rated the same speeches. Speakers consistently overestimated how visible their nerves were (Journal of Experimental Social Psychology, 2003). The researchers called it the illusion of transparency. The striking part: speakers who were simply told about this effect before speaking felt calmer and were rated as better speakers.
So the pounding is private. Treat it as information for you, not a signal the room is reading.
What should you avoid on the day of a presentation?
A few ordinary habits add fuel to an already fast heart. None of them is dramatic on its own, but they stack.
- The extra coffee. Caffeine raises alertness partly by making your body act a little more like it's under stress, which you don't need more of. Keep to your normal amount, at your normal time. Don't add a second cup "for energy" an hour before you speak. The same goes for energy drinks and pre-workout.
- An empty stomach. Skipping food because you feel queasy tends to leave you shakier. Eat something light and familiar a couple of hours before.
- Sitting completely still. Adrenaline is energy with nowhere to go. A short walk, climbing a flight of stairs or shaking out your arms gives it somewhere to go. Pacing a corridor ten minutes before you speak is fine. Sitting frozen in your seat and listening to your pulse isn't.
- Last-minute cramming. Reading your notes over and over in the final ten minutes keeps you scanning for gaps. Do your final run-through earlier, then put the notes away.
If you're on any regular medication, or you're considering something like a beta blocker for big talks, that's a conversation for your doctor. The fear of public speaking guide covers what beta blockers do and don't do.
How to slow your heart rate before a presentation
Breathe out for longer than you breathe in. Your heart naturally speeds up a little on each inhale and slows a little on each exhale. That rhythm is normal, and it's called respiratory sinus arrhythmia. Make the exhale long and you spend more time in the slowing phase.
Here's a version you can do in a corridor without anyone noticing:
- Breathe in through your nose for a count of four.
- Breathe out slowly through your mouth or nose for a count of six to eight. Let your shoulders drop as you go.
- Repeat for two to five minutes.
If you want something even simpler, try a physiological sigh. Take a normal breath in through your nose, then a second short sip of air on top of it, then a long, slow exhale. In a 2023 Stanford study, volunteers did five minutes a day of one of several breathing practices or mindfulness meditation for a month. Daily cyclic sighing (that double inhale and long exhale) produced the biggest improvement in mood and the biggest drop in resting breathing rate (Balban et al., Cell Reports Medicine, 2023).
Two things to avoid. Don't take huge, fast breaths. Over-breathing can make you light-headed and tingly, which feels like more panic. And don't hold your breath to "steady" yourself, which tends to leave you gasping for your first line. For more patterns, including box breathing and a quiet version for when you're already on stage, see breathing exercises for public speaking.
Should you try to calm down or call it excitement?
Call it something useful. Trying to force yourself calm when your heart is already pounding rarely works, because you're trying to argue with your body. Telling yourself the arousal is there to help you tends to work better, and there's evidence it changes what your heart is actually doing.
In a 2012 Harvard study, participants gave a stressful speech while their cardiovascular responses were recorded. One group was told beforehand that the racing heart and fast breathing of stress are the body's way of preparing to perform well. Compared with controls, that group showed a healthier stress response: their hearts pumped more efficiently and their blood vessels were less constricted (Jamieson, Nock and Mendes, Journal of Experimental Psychology: General, 2012). Their hearts still sped up. The speed-up just looked like the pattern of someone facing a challenge rather than a threat.
In practice, pick a short phrase and use it every time you notice the pounding: "This is my body getting ready." Saying "I'm excited" out loud, as odd as it feels, works on the same idea. You aren't pretending to be relaxed. You're giving the sensation a job.
How to stop heart racing when public speaking: the first minute
The first minute is usually the peak, so plan it rather than hoping it goes well.
- Script your opening three sentences. Know them word for word. When your heart is hammering, your working memory shrinks, and a scripted opening means you don't need it. Our guide on how to start a presentation has openings that are easy to deliver under pressure.
- Take one breath before you speak. Arrive at the front, plant your feet, breathe out, then start. The two seconds feel long to you and look composed to the room.
- Say the first sentence slower than feels natural. Adrenaline speeds up everything, including your speech, and rushing leaves you short of air, which makes the pounding feel worse. If you tend to race, see how to stop talking too fast.
- Find one friendly face. Talk to one person for your first sentence or two. A single listener is much less alarming than a room.
- Ask the room a question early. A show of hands moves the attention off you for a few seconds and gives you a free breath.
How do you calm a racing heart mid-presentation?
Use pauses as built-in exhales. At the end of a point, stop, let the breath go out, then breathe in and carry on. Nobody in the audience thinks "they're doing a breathing exercise". They think you're giving the last point a moment to land. How to use pauses when speaking shows where to place them.
A few more things that help once you're underway:
- Move with a purpose. A step toward the audience at a key point, or a deliberate gesture, burns off some of the adrenaline that would otherwise go into your pulse and hands.
- Don't check in on your heart. Every time you mentally take your pulse, you hand your attention back to the symptom. Put it on the next point and on whether the room is following.
- Sip water at a transition. It's a natural pause, it helps if adrenaline has dried your mouth, and it gives you two seconds of breathing room.
- Don't announce it. "Sorry, my heart's going crazy" turns a private sensation into a public one. The room had no idea.
When is a racing heart more than nerves?
Speaking nerves cause a racing heart that starts with the situation and fades within minutes of it ending. That's expected, and anxiety is one of the most common causes of palpitations. The NHS lists signs that are worth getting checked (NHS):
- Palpitations that last a long time, keep coming back, or are getting worse.
- Palpitations that happen when you're not anxious, or wake you at night.
- Chest pain, dizziness or shortness of breath alongside them.
- A history of heart problems.
Fainting or blacking out with palpitations, or chest pain that doesn't settle, needs urgent medical help. Call your emergency number rather than waiting it out.
If it is nerves but they're strong enough that you avoid speaking altogether, the most effective long-term fix is repeated, graded practice, ideally with help. The exposure ladder in how to overcome fear of public speaking walks through it, and how to calm presentation nerves covers a full routine for presentation days.
Why does practice slow your heart over time?
Each time you speak and nothing terrible happens, your threat system downgrades the situation a little. The racing heart is your body's answer to "is this dangerous?", and practice gives it new evidence. The first talk after a long break will usually spike harder than the fifth talk in a month.
That's why rehearsing out loud matters more than rereading notes. Your heart responds to the experience of speaking, not to knowing your material. Record yourself, then run it in front of one person, then a small group, as in how to practice public speaking. Each round, the starting spike gets a little smaller and settles a little faster.
Key takeaways
- A racing heart before a talk is adrenaline doing its job, and it's close to universal.
- The audience can't see or hear it. Speakers overestimate how visible their nerves are.
- To slow it, breathe out longer than you breathe in for two to five minutes, or use physiological sighs.
- Skip the extra coffee, eat something light, and move instead of sitting frozen.
- The first minute is usually the peak: script your opening and say it slowly.
- Relabel the pounding as readiness. In one study that shifted speakers' hearts toward a more efficient pattern.
- Palpitations that happen outside speaking, keep recurring, or come with chest pain or fainting need a doctor.
Frequently asked questions
Why does my heart race when I speak in public?
Being watched and judged triggers your fight-or-flight response, and your adrenal glands release adrenaline. Adrenaline makes your heart beat faster and harder to get blood to your muscles. Noticing the pounding and worrying about it can add more alarm on top. It's the same response that causes shaking hands, sweating and a dry mouth before a talk.
How do I slow my heart rate before a presentation?
Breathe in for about four counts and out for six to eight, for two to five minutes. Your heart slows slightly on every exhale, so a long exhale lowers it directly. Physiological sighs (two inhales, one long exhale) work too. Also skip the extra coffee, eat something light and walk around rather than sitting still while you wait.
Is it normal for your heart to race when public speaking?
Yes. Around three in four people have some public speaking anxiety, and a faster heartbeat is one of the most common signs. Experienced speakers feel it too. In research on speakers' stress over a talk, it usually peaked just before starting or about a minute in, then settled. What changes with practice is how quickly it settles.
What do I do if my heart starts pounding during a presentation?
Pause at the end of your current point and let a slow breath out. Slow your speaking pace, find one friendly face, and keep your attention on the next point rather than on your pulse. Move or gesture to use some of the adrenaline. Don't mention it to the audience. They can't hear or see it, and saying it out loud makes it public.
Can the audience hear my heart pounding?
No. You feel your heartbeat from inside your body, and nobody across a room can see or hear it. Research on the illusion of transparency found that speakers consistently overestimate how nervous they look. In one study, speakers who were told this before speaking felt calmer and were rated as better speakers.
Should I take a beta blocker for a racing heart before speaking?
That's a decision for a doctor, not a blog. Beta blockers such as propranolol block some of adrenaline's effects on the heart, and some doctors prescribe them for occasional performance situations. They aren't suitable for everyone, including some people with asthma or certain heart conditions. Breathing, preparation and practice work for most people without medication.
Conclusion
You can't stop your heart from speeding up before a talk, and you don't need to. Slow it with long exhales, avoid adding fuel, plan the first minute, and treat what's left as your body getting ready. Then practise out loud, so the next talk spikes a little less than this one.