Most heart palpitations do go away on their own, often within seconds to minutes. The majority of people who experience that fluttering, skipping, or pounding sensation in their chest are having benign episodes triggered by something identifiable and temporary, like caffeine, stress, or poor sleep. Once the trigger is removed, the palpitations typically stop. That said, some palpitations recur or persist because of an underlying condition that needs attention.
What’s Actually Happening During a Palpitation
When you feel a “skipped” beat, you’re most likely experiencing an early heartbeat. An electrical signal fires from the wrong place at the wrong time, causing the heart to contract before it has fully filled with blood. Because there’s little or no blood pushed out during that premature beat, you don’t feel it as a normal heartbeat. The next beat then pushes out a larger-than-usual volume of blood, which is why it feels like a hard thump or an extra beat.
This is a type of arrhythmia, but the word sounds scarier than the reality for most people. Occasional premature beats are extremely common and, in an otherwise healthy heart, harmless. Your heart quickly returns to its normal rhythm without any intervention.
Why They Start and What Makes Them Stop
The most common palpitation triggers are lifestyle-related, which is good news because it means they’re within your control. Caffeine, nicotine, and alcohol are the big three. Cold and cough medications containing pseudoephedrine can also set them off. So can stimulants like amphetamines and cocaine.
Beyond substances, stress and anxiety are major drivers. When your body is in a heightened state of alertness, adrenaline surges can cause your heart to beat faster or irregularly. Sleep deprivation amplifies this effect. Dehydration plays a role too, because your heart has to work harder to circulate a lower volume of blood.
For many people, the fix is straightforward: cut back on coffee, get more sleep, manage stress, and stay hydrated. When the trigger disappears, the palpitations follow. Some people notice a complete resolution within days of making these changes; others see a gradual improvement over weeks.
The Role of Electrolytes
Low levels of magnesium and potassium are an underrecognized cause of palpitations that many people overlook. These minerals control the electrical signals that keep your heart beating in rhythm. When magnesium drops too low, your cells can’t properly regulate potassium levels either, because magnesium is needed to power the pumps that move potassium into cells and sodium out. This disrupts the electrical balance across heart cell membranes, which can trigger irregular beats.
If your palpitations persist despite removing the usual lifestyle triggers, an electrolyte imbalance is worth investigating. Heavy sweating, chronic stress, alcohol use, and certain medications (especially diuretics) can all deplete these minerals over time.
Hormonal Changes and Palpitations
Palpitations that show up during pregnancy, perimenopause, or around your menstrual cycle are usually hormone-driven and temporary. During pregnancy, shifts in estrogen levels combined with increased blood volume can trigger noticeable heartbeat changes. These palpitations are common and, in most cases, resolve after delivery.
During perimenopause and menopause, fluctuating estrogen levels can similarly affect heart rhythm. These episodes tend to decrease as hormone levels stabilize, though the timeline varies from months to a few years.
When Palpitations Signal Something Deeper
Sometimes palpitations are a symptom of a condition that won’t resolve on its own. Hyperthyroidism (an overactive thyroid) speeds up your metabolism and heart rate, producing frequent palpitations that persist until the thyroid issue is treated. Iron-deficiency anemia forces the heart to pump faster to compensate for reduced oxygen-carrying capacity in the blood, which can feel like constant racing or pounding.
Certain heart rhythm disorders, like atrial fibrillation or supraventricular tachycardia, cause recurring episodes that may become more frequent over time without treatment. These conditions are manageable, but they don’t simply go away on their own.
The pattern of your palpitations matters. Occasional skipped beats that last a few seconds and happen a few times a week are almost always benign. Episodes where your heart races at 150 beats per minute or higher for several minutes, especially if they start and stop abruptly, suggest a rhythm disorder worth evaluating.
How to Stop Palpitations in the Moment
If you’re in the middle of an episode, a technique called the Valsalva maneuver can sometimes reset your heart rhythm. You bear down as if you’re trying to blow air out hard with your mouth closed, holding that pressure for 10 to 15 seconds. A modified version, where you blow forcefully into a small syringe or straw for the same duration, has been shown to work even better, with success rates above 40% for certain types of fast heart rhythms. Splashing ice-cold water on your face triggers what’s called the diving reflex, which activates the vagus nerve and slows the heart rate. These techniques require no equipment and are safe to try at home.
Slow, deep breathing also helps by activating the vagus nerve more gently. Lying down and focusing on long exhales can calm an episode within a few minutes for many people.
How Palpitations Are Evaluated
If your palpitations are frequent or concerning, your doctor will likely start with a standard electrocardiogram (ECG), which records your heart’s electrical activity for about 10 seconds. The problem is that palpitations are often intermittent, so a brief snapshot may miss them entirely.
If the ECG comes back normal, the next step is usually a Holter monitor, a portable device you wear for a day or more while going about your regular activities. It continuously records your heart rhythm to catch irregularities that happen unpredictably. For palpitations that occur less than once a week, an event recorder is more practical. You wear it for up to 30 days and press a button when you feel symptoms, capturing the heart’s activity in that moment. Some smartwatches now offer basic ECG monitoring that can provide useful preliminary data between doctor visits.
What Determines Whether They Come Back
The likelihood of your palpitations returning depends entirely on what’s causing them. If the cause is three cups of coffee a day and you cut back to one, they may vanish permanently. If the cause is chronic anxiety, they’ll likely recur during stressful periods unless the anxiety itself is addressed. If the cause is a structural or electrical heart condition, treatment can dramatically reduce or eliminate episodes, but that requires proper diagnosis first.
For the vast majority of people, palpitations are an uncomfortable but harmless sensation that resolves with simple changes. The episodes that warrant urgent attention are those accompanied by fainting or loss of consciousness, dizziness or lightheadedness during a racing heart, or chest pain. These combinations suggest the heart may not be pumping effectively during the arrhythmia and need immediate evaluation.