I've had it when under stress, too much caffeine, not enough sleep. When those conditions are combined with exercise, it gets worse.
I have not experienced this in a long time. When I first had it, I had an echo cardiogram, which showed no valve issues. I've had 2 follow ups in the course of the last 25 years.
Keep us posted after your appointment.



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(speciality of a cardio who works on just electiral issues). The specialist can locate the place where the faulty impulse starts and zzzap it. >90% cure rate. Spoke to a person in my bike club who had it done 5 years ago(at ~30 or so) and she is fine.