What you might be experiencing
Heart palpitations from anxiety feel like your heart is pounding, fluttering, or skipping in your chest — and they can arrive when you are doing absolutely nothing. You might be reading, lying in bed, or sitting at your desk when suddenly your heart announces itself in a way that feels impossible to ignore. The more you notice it, the harder it is to stop noticing it.
What is happening physically is that your nervous system has activated a low-grade stress response. Adrenaline rises, your heart rate climbs, and your body enters a state of alertness — even though nothing around you is threatening. Anxiety does not need a reason to do this. Worry, accumulated stress, or even the memory of a previous episode can be enough to set it off. Some people describe scanning their body afterward, checking for other symptoms, which tends to extend the episode rather than end it.
It is worth knowing that anxiety is not the only possible cause. Thyroid issues, anemia, dehydration, stimulant intake, and certain heart rhythm conditions can all produce a racing heart at rest. This does not mean something is seriously wrong, but it does mean that if palpitations are frequent or new for you, a conversation with a healthcare provider is a reasonable and worthwhile step — not something to put off out of fear.
What can help
Managing anxiety-driven heart palpitations usually involves both immediate tools for in-the-moment relief and longer-term changes that reduce how often they occur. For right now, slow breathing is one of the most accessible and well-supported options available. Try breathing in for four counts and out for six, letting the longer exhale activate the part of your nervous system that slows the heart. Even two or three minutes of this can shift how you feel.
Over time, a few practical changes can reduce the frequency of episodes. Cutting back on caffeine, staying well hydrated, and protecting your sleep are worth taking seriously — each of these affects how reactive your nervous system is on any given day. Keeping a brief log of when palpitations happen, noting stress levels, what you ate, and how you slept, can help identify patterns that are not always obvious in the moment.
If palpitations are frequent, if they are shaping what you do or avoid doing, or if health anxiety has become a significant part of your daily experience, therapy is worth pursuing — not as a last resort, but as a genuinely effective option. Cognitive behavioral therapy, in particular, has strong evidence for both anxiety and the kind of health-focused worry that palpitations can generate. A provider can also rule out physical causes, which tends to reduce anxiety on its own.
When to reach out
Reaching out for support is not a sign that things have gotten out of hand — it is a practical choice when symptoms are affecting your quality of life. If heart palpitations are happening regularly, causing you to avoid activities, or driving significant worry about your health, both a medical evaluation and mental health support are reasonable next steps to take at the same time rather than sequentially.
Some symptoms call for more urgent attention. A racing heart that comes with chest pain, pressure, dizziness, fainting, or severe shortness of breath should be evaluated in an emergency setting. These symptoms can indicate a cardiac event or arrhythmia that needs prompt assessment. Even if prior episodes turned out to be anxiety-related, a new pattern or more intense presentation deserves medical attention.
If palpitations are connected to significant distress, feelings of hopelessness, or thoughts of self-harm, please do not wait. If you are in the US and need immediate support, you can call or text 988 (Suicide & Crisis Lifeline) at any time.