When i'm stressed, then walk, i get skipped beats. cardiac stress mri clear. cardiologist thinks anxiety. why doesn't exercise help?

Consider monitoring: In most cases, palpitations even with exercise are benign. In one series, short runs of irregular heart rhythms were detected by stress testing in healthy people and did not lead to heart disease on later follow-up. Have you worn a heart monitor? Talk with your doctor about exercise testing or wearing a heart monitor to evaluate the rare possibility that your may have SVT episodes with exercise