I feel my heart pounding in my chest. What could be causing this, and should I be concerned?
A pounding heartbeat (palpitations) may be caused by stress, anxiety, high caffeine intake, lack of sleep, or strenuous activity. It may also occur due to irregular heart rhythms or an underlying heart condition. If this happens frequently, lasts a long time, or is accompanied by chest pain, dizziness, or shortness of breath, please see a doctor promptly for evaluation.