I'm not sure, every time I've been for health check ups, blood pressure checks etc and when i had the heart tracker thing on they say it's normal and my blood pressure is completely fine. I seem to be healthy and in good shape according to the doctors anyway, yet 3 days out of 5 in a week I'll wake up like this and just have this woozy/high/foggy feeling lingering and popping up in those certain situations.