I also have the internal vibrations pretty much 24/7. Calm mind, but body won’t quit vibrating! The vibrations are coming from my chest area. They make my head shake. I still feel them upon waking up from sleep sometimes. Can feel them in my tailbone if sitting on a hard chair. Feels like a phone buzzing in my pocket when there’s no phone in my pocket! Mine started after a low dose (10 mg) of Fluoxetine for a total of 13 days (not in a row) in January 2021. Persisting as of May 2022.