Most heart palpitations are harmless and fixable with simple changes to your habits, stress levels, or nutrient intake. That skipped-beat feeling, fluttering in your chest, or sudden awareness of your heartbeat is usually caused by premature contractions that resolve on their own. But there are also physical techniques that can slow your heart rate within seconds, and longer-term strategies that reduce how often palpitations happen in the first place.
Techniques That Work in the Moment
Your vagus nerve runs from your brainstem to your abdomen and acts as a brake pedal for your heart. When you stimulate it, it slows down your heart’s electrical impulses. A few physical maneuvers can activate this nerve on demand.
The Valsalva maneuver is one of the most effective. Lie on your back, take a deep breath, then try to exhale forcefully with your mouth and nose closed for 10 to 30 seconds. It should feel like blowing air into a blocked straw. A modified version works even better: do the same forced exhale while sitting up, then immediately lie back and pull your knees to your chest for 30 to 45 seconds. For children, blowing on a thumb without letting air escape achieves the same effect.
The diving reflex is another option. Take several deep breaths while sitting, hold your breath, then plunge your entire face into a bowl of ice water. Hold it submerged as long as you can. If that’s too intense, pressing a bag of ice or a soaked cold towel firmly against your face triggers the same reflex. The sudden cold signals your body to slow the heart rate quickly.
Slower, deep breathing on its own can also help. Breathing in for four counts, holding for four, and exhaling for six activates the same calming nerve pathway, just more gradually.
Common Triggers to Cut Back On
Caffeine, alcohol, and nicotine are the three most common dietary triggers. The relationship with caffeine is more nuanced than people assume: studies, including randomized trials, have found that drinking caffeinated beverages in “usual amounts” does not increase the risk of palpitations or atrial fibrillation episodes. The problem tends to be high doses, particularly energy drinks with concentrated caffeine. Keeping intake to about two cups of coffee in the morning and avoiding energy drinks is a reasonable approach.
Alcohol is a more reliable trigger. For people prone to palpitations or atrial fibrillation, cardiologists at Harvard recommend no more than three alcoholic drinks per week. Even moderate drinking can irritate heart tissue and disrupt the electrical signals that keep your rhythm steady. Dehydration from alcohol also plays a role, since low fluid levels make the heart work harder.
Nutrients Your Heart Needs
Low magnesium is one of the most overlooked causes of palpitations. Magnesium helps regulate the electrical activity in heart cells, and when levels drop, those cells become more excitable and fire out of rhythm. The recommended daily intake for adults over 31 is 420 mg for men and 320 mg for women. Many people fall short, especially those who eat few nuts, seeds, leafy greens, or whole grains.
Potassium works alongside magnesium to stabilize heart rhythm. Bananas, potatoes, avocados, and beans are all good sources. If you suspect a deficiency in either mineral, a simple blood test can confirm it before you start supplementing. Taking high-dose magnesium or potassium without knowing your levels can cause its own problems, so testing first is worth the effort.
How Stress and Sleep Drive Palpitations
Stress hormones are a direct line to palpitations. When you’re anxious or under pressure, your adrenal glands release adrenaline and norepinephrine. These hormones increase heart rate, boost blood pressure, and redirect blood flow toward major muscles. That’s useful in a genuine emergency, but chronic stress keeps these hormones elevated, which means your heart is being pushed to beat faster and harder than it needs to, sometimes irregularly.
Regular exercise, even 20 to 30 minutes of brisk walking, helps burn off excess adrenaline. Meditation, progressive muscle relaxation, and consistent sleep schedules all lower baseline stress hormone levels over time. The effect isn’t instant, but people who stick with these habits for a few weeks typically notice a real drop in palpitation frequency.
Poor sleep deserves special attention. Sleep apnea, which causes repeated drops in blood oxygen throughout the night, is strongly linked to heart rhythm disturbances. The cycle of oxygen dropping and then surging back creates bursts of inflammation and blood pressure spikes that damage heart tissue over time and make the heart more prone to irregular rhythms. Palpitations that are worse at night or upon waking are a clue that disordered breathing during sleep may be involved. If you snore heavily, wake up gasping, or feel exhausted despite a full night’s sleep, a sleep study can identify whether this is a factor.
When Palpitations Signal Something Serious
A single “skipped beat” here and there is almost always a premature contraction, which is benign. Most healthy people experience these daily without noticing. The pattern that warrants attention is a rapid, irregular rhythm that sustains for minutes or longer, particularly during exercise. That pattern is associated with atrial fibrillation or other arrhythmias that need medical evaluation.
Certain accompanying symptoms change the picture entirely. Call emergency services if palpitations won’t stop and you experience any of the following: passing out or nearly passing out, chest pain or pressure spreading to your neck, jaw, or arms, or significant trouble breathing. Dizziness, confusion, unusual sweating, or palpitations that are clearly getting worse or more frequent over weeks also warrant a medical visit, though not necessarily the emergency room.
How Palpitations Get Diagnosed
The tricky part of diagnosing palpitations is that they’re often gone by the time you’re sitting in a clinic. A standard electrocardiogram captures your heart’s electrical activity for only a few minutes, which may miss intermittent episodes entirely.
For that reason, doctors often use a Holter monitor, a small wearable device that records your heart rhythm continuously for 24 to 48 hours. You go about your normal life while wearing it, and the recording captures any irregularities that happen during that window. If your palpitations are less frequent, an event monitor may be a better fit. Unlike the Holter, it only records when you press a button to activate it during symptoms, and you can wear it for weeks.
Blood work typically accompanies monitoring. Thyroid levels, electrolytes (including magnesium and potassium), and a complete blood count help rule out metabolic causes that are easy to treat once identified.
Medical Treatment for Persistent Palpitations
When lifestyle changes aren’t enough, medications can help. Beta-blockers are the most commonly prescribed option. They work by blocking adrenaline and norepinephrine from acting on the heart, which slows heart rate and reduces the force of each beat. For people whose palpitations are driven by stress, anxiety, or an overactive sympathetic nervous system, beta-blockers can make a noticeable difference quickly.
These medications are generally well tolerated, though they can cause fatigue, cold hands, or slower-than-expected heart rates during exercise. Some people take them daily, while others use them only in situations they know trigger palpitations, like public speaking or high-stress events.
For palpitations caused by a specific arrhythmia like atrial fibrillation or a re-entry circuit in the heart, treatment may involve a procedure called catheter ablation, where the tissue causing the faulty electrical signal is targeted and deactivated. This is typically reserved for cases where the arrhythmia is well-documented, clearly symptomatic, and not responding to medication.