So this may not help everyone, but if it helps at least one then that’s a positive. I’ve had pretty bad health anxiety to the point where I ended up at the ER. Well it turned into heart anxiety since my heart rate was always in the 90 and up range. I’m in pretty good shape as it is, and work out regularly, anyway I started a new diet, nothing fancy and it was generated by an app. About two weeks ago I noticed my heart rate was in the 70-80 range and it’s consistent now. Idk if it was the diet or the exercise or both but it worked for me and I hope it works for someone else.