Most healthy adults experience a small number of extra heartbeats every day without ever noticing them. In one population-based study of healthy adults aged 25 to 41, researchers found at least one premature ventricular contraction (PVC) in 69% of participants, with a median count of just 2 per day. The 95th percentile was 193, meaning only 5% of healthy people had more than that in a 24-hour period.
So if you’re feeling occasional flutters, skipped beats, or a brief pounding sensation a few times a day, that’s well within the range of normal. The more important question is how many become a concern, and what other symptoms might signal something worth investigating.
What Counts as a Palpitation
A palpitation is any heartbeat you become aware of. It might feel like a skip, a flutter, a brief racing sensation, or a thud in your chest. Most of the time, what you’re feeling is a premature beat: the heart fires slightly early, then pauses briefly before the next normal beat. That pause and the stronger contraction that follows it are what create the “skipping” sensation. These premature beats originate either in the upper chambers (premature atrial contractions) or lower chambers (premature ventricular contractions). Both are extremely common and, in an otherwise healthy heart, harmless.
How Many Per Day Is Typical
In a large community sample of over 1,100 Americans who wore heart monitors for 24 hours, premature ventricular beats made up a median of just 0.011% of all heartbeats. To put that in perspective, your heart beats roughly 100,000 times a day. A burden of 0.011% works out to about 11 extra beats across an entire day. Most people fall somewhere between 2 and a few dozen without any clinical significance.
You probably won’t feel most of these. Many people who show dozens or even low hundreds of premature beats on a Holter monitor report no symptoms at all. Whether you notice them often depends on body position, stress level, and how attuned you are to your heartbeat. Feeling a handful of palpitations scattered throughout the day, especially during moments of stress, after caffeine, or when lying on your left side, is ordinary.
The Burden Threshold That Matters
Cardiologists think about palpitations not as a raw count but as a “burden,” the percentage of your total daily heartbeats that are premature. Research has consistently shown that when premature ventricular beats exceed roughly 10% of all heartbeats (around 10,000 or more per day), the heart muscle can begin to weaken over time. Studies examining high PVC burden have found associations with larger heart chambers, lower pumping efficiency, and elevated markers of cardiac stress.
Below that threshold, especially under 5%, isolated premature beats in a structurally normal heart carry little to no long-term risk. If your doctor orders a 24-hour monitor and the results show a burden under 1%, that’s solidly reassuring.
Why Palpitations Increase With Age
If you’ve noticed more palpitations as you’ve gotten older, that tracks with the data. Research from the European Society of Cardiology found that the likelihood of atrial rhythm irregularities increases by about 9% per year of age, with ventricular irregularities rising by about 4% per year. A noticeable jump in prevalence begins around the 50 to 54 age group.
Older age and lower cardiovascular fitness are both strong independent risk factors for a higher burden of extra beats originating in the upper chambers. For extra beats from the lower chambers, age and kidney function matter more than fitness level. This means that some increase in palpitations during middle age and beyond is expected, though staying physically active appears to help keep atrial ectopy in check.
Common Triggers
Certain everyday habits make palpitations more likely or more noticeable:
- Caffeine: Current evidence suggests up to three cups of coffee a day is fine for most people and may even offer heart benefits. Beyond that, palpitations become more likely.
- Alcohol: Even moderate drinking can trigger irregular rhythms, particularly atrial fibrillation. Aged cheeses, cured meats, and dried fruit contain tyramine, which can raise blood pressure and contribute to palpitations as well.
- Dehydration: Not drinking enough water reduces blood volume, which forces your heart to work harder and can produce noticeable extra beats.
- Stress and poor sleep: Both elevate adrenaline, which directly increases the excitability of heart cells and makes premature beats more frequent.
For many people, addressing one or two of these triggers dramatically reduces the number of palpitations they feel.
Signs That Need Evaluation
Occasional palpitations on their own rarely indicate a serious problem. The picture changes when they come with other symptoms. Palpitations paired with dizziness, fainting, chest pain, or significant shortness of breath warrant a medical workup. These combinations can point to arrhythmias that carry real risk.
Sustained rapid heart rates, where your pulse stays above 100 for minutes at a time without an obvious trigger like exercise, are different from an occasional skip. Supraventricular tachycardia causes a sudden, very fast pulse often accompanied by lightheadedness. Ventricular tachycardia, particularly in someone with underlying heart disease, can cause loss of consciousness and in rare cases cardiac arrest. The key distinction is between isolated extra beats (common, usually benign) and sustained rhythm changes (less common, worth investigating).
Palpitations that consistently happen during exercise rather than at rest also deserve attention. While it’s normal for your heart rate to climb during a workout, frequent premature beats under physical stress can indicate a different risk profile than the same beats occurring while you’re sitting on the couch.