I've noticed my heart rate is pretty high, around 110 bpm, even though all my tests like blood work, TMT, and the ECG are normal, with just sinus tachycardia showing up. I don't have any issues when I'm running, but the high heart rate still worries me. I'm really anxious about my heart, and even my blood pressure is normal. Could anxiety be causing this, or is there something else I should consider?

You may be experiencing anxiety-related tachycardia. In such cases, it is important to address the underlying anxiety to help reduce the heart rate. You can try taking propranolol (brand name: Inderal) as needed to help lower your heart rate and reduce anxiety symptoms. Additionally, practicing relaxation techniques such as deep breathing exercises or mindfulness meditation may also be beneficial in managing your anxiety and heart rate.