Yes, I definitely get this a LOT! On one of my holter monitor tests my pulse went down to 39. I absolutely feel horrible when my heart rate is at 50 or below. I called my cardiologist about it this week and he said, "Wear your compression garments and eat lots of salt, stay hydrated." Gee, thanks...lol! The nurse said with dysautonomia I will just days days that are not so good and to rest on those days.