I have a lousy family history with heart issues, stokes, on and on. After a lousy year mine hit pre-hyper and I worked on stress reduction and more exercise. I was monitoring BP regularly. That was high for me compared to the past few years.
I’ve had a handful of those episodes over the summer but only after heavy exertion. Running stairs for 4 hours at an indoor water park, TKD sparring, and once or twice after very stressful events. I wrote it all off to a stressful year with unique occurrences. That morning I just happened to be paying attention and the Watch was the final straw that made it click.