I have tried a few things. I bought a new HRM strap, only because the old one wore out. I can use HRM gel or no gel with the same result. Recently, I purchased a new running watch, though for unrelated reasons, also with the same result. The only thing that hasn’t changed is the HR monitor / transmitter itself, and me! So I’m starting to doubt that the issue is due to connectivity. Seeing a sports cardiologist is becoming a good idea.
