I think its typical die-off symptoms. I don’t have any anxiety really but I still get muscle twitches time to time (throughout my treatment). Additionally, the heart beating thing has happened throughout my treatment, but it was noticeably worse during the die-off period…now I don’t get it much anymore. Once your die-off has gone away completely, this symptom won’t happen too much.
Occasionally I would get anxious but I still didn’t experience these symptoms when that happened. So in my opinion they are not related (anxiety and these symptoms).