I have a similar condition. Mine is: https://www.mayoclinic.org/diseases-conditions/wolff-parkinson-white-syndrome/symptoms-causes/syc-20354626 https://www.may

I have a similar condition. Mine is: https://www.mayoclinic.org/diseases-conditions/wolff-parkinson-white-syndrome/symptoms-causes/syc-20354626 https://www.mayoclinic.org/diseases-conditions/wolff-parkins... I have the same bouts of tachycardia. They are very intermittent, no real cause. And the same breath holding technique works for me. Very interesting stuff!