Hello and thank you for using HCM. I carefully read you question and I understand your concern.I will try to explain you something. There are different reasons that might cause increased heart beats. Physical or emotional stress, caffeine products might cause increased heart frequency so its mandatory to avoid them. But as you explain, you don t use them in an excessive way. Also, there are different pathology s like anemia, thyroid gland problems like hyperthyroidism that might be the cause of fast heart beats. When you experience a high frequency, it might be normal to feel palpitation or uncomfortable feeling in your neck or a chest discomfort. If these frequencies are interfering in your normal daily live, If I was your treating doctor I will recommend some simple examinations. I will recommend an electrocardiogram, a cardiac echo-cardiography and of course a rhythm holter monitoring for 24 h. This is necessary to have a full view of your mean frequencies during day and night After these, a full blood check up to exclude anemia or thyroid problems with thyroid hormone levels Doing this examinations helps us understand if it is necessary to treat this high frequencies or not. Hope I was helpful. Wish you good health. Best regards.