Different virus, but after a rough infection it took almost three years for my intermittent tachycardia to stop and to have the ability to exercise like I used

Different virus, but after a rough infection it took almost three years for my intermittent tachycardia to stop and to have the ability to exercise like I used to again. Weirdly it seemed to be the first shot of covid vaccine that put a final stop to it for me, that or a crazy coincidence.