Palpitations: what it usually means
Also searched as: racing heart, heart skipping beats, pounding heartbeat · Updated 19 Aug 2026 · Educational — not medical advice
The short answer: Palpitations, the feeling of a racing, pounding, or skipping heartbeat, are usually triggered by caffeine, stress, exercise, or anxiety and pass quickly on their own. They are common and often harmless. Palpitations that come with chest pain, breathlessness, dizziness, or fainting need urgent medical attention, since they can occasionally signal a heart rhythm problem that needs evaluation.
See a doctor promptly if…
Palpitations with chest pain, breathlessness, or fainting need emergency evaluation.
A very fast or irregular heartbeat that doesn't settle within a few minutes should be checked promptly.
Palpitations with a family history of heart disease or sudden cardiac events warrant a cardiology review.
Frequent palpitations that interfere with daily life deserve medical attention.
New palpitations in someone with an existing heart condition need prompt assessment.
Common causes
- Caffeine or stimulants — Coffee, energy drinks, or certain medications can trigger a racing or pounding heartbeat.
- Stress and anxiety — Heightened stress activates the body's fight-or-flight response, speeding up the heart rate.
- Dehydration or low blood sugar — Not drinking enough fluids or skipping meals can trigger noticeable palpitations.
- Hormonal changes — Thyroid imbalance or hormonal shifts, including during pregnancy, can cause palpitations.
- Heart rhythm irregularities — Occasionally, palpitations reflect an actual irregular heart rhythm that needs medical assessment.
What helps
- Reduce or avoid caffeine and other stimulants if they seem to trigger episodes.
- Practice slow, deep breathing to help calm a racing heart during stressful moments.
- Stay hydrated and eat regular meals to avoid triggers like dehydration or low blood sugar.
- Keep a simple log of when palpitations happen to share with a doctor.
Which doctor to consult
Start with your family doctor; palpitations with chest pain, breathlessness, or fainting need urgent evaluation, and a cardiologist should assess frequent or concerning episodes.
Read more about the causes
Lab tests doctors often check
If this symptom persists, these are the values a doctor commonly looks at — and if you already have a report, the analyzer explains where you stand.
Questions people ask
Are heart palpitations dangerous?
Most palpitations are harmless and related to caffeine, stress, or anxiety. However, palpitations with chest pain, breathlessness, dizziness, or fainting should be treated as a medical emergency, since they can occasionally reflect a heart rhythm problem.
Why does my heart race after drinking coffee?
Caffeine is a stimulant that can speed up the heart rate and trigger a fluttering or pounding sensation in sensitive individuals. Reducing caffeine intake often resolves this, but frequent or severe palpitations still deserve a medical check.
Related symptoms
This guide is educational and doesn't replace a clinical assessment. If a symptom is severe, rapidly worsening, or worrying you, see a doctor — being checked and reassured is never a wasted visit.