why is my heart rate low

A consistently low heart rate, especially in an active person like yourself, might not be abnormal. Athletes often have a condition known as “athletic heart syndrome” where the heart becomes more efficient at pumping blood, resulting in a lower heart rate even during exercise. Running and endurance training can indeed contribute to this, as it leads to increased vagal tone, which slows the heart rate. However, it’s crucial to understand that this normally doesn’t cause symptoms such as fatigue or dizziness. If you’ve been feeling super tired, it might warrant further investigation. Bradycardia—a term for a slower than normal heart rate—can stem from various reasons. It could be tied to medications like beta-blockers, electrolyte imbalances, thyroid dysfunction, or even sleep apnea. Coffee and stress might cause fluctuations, but they wouldn’t typically drop your heart rate notably. While the internet can be a help, it’s easy to get scared after reading about worst-case scenarios. Therefore, it’s practical to rule out underlying causes. Start by seeing a general practitioner for an evaluation that may include thyroid function tests, electrolyte panels, and an EKG. They might refer you to a cardiologist if needed. If at any point you experience symptoms like fainting, chest pain, or difficulty breathing, seek prompt medical attention. Until you have a clearer picture from a healthcare professional, monitor your symptoms and heart rate, but there’s no need to panic. Balance lifestyle factors like nutrition, sleep, and stress management to support overall health.