I’ve not found one that alerts you. Will have to do some research!I have a different type of orthostatic intolerance, called neurally mediated hypotension. It basically means my heart is too slow when standing up, which could lead to fainting episodes.
I have no idea how to train Peggy but I know there are smart watches who can give you alerts based on your programmed max heart rate. I’m sure you know about those though.
(Is it just me or the pic in my siggy has disappeared ?)
I wore a Fitbit for a while, but it constantly congratulated me for working out when I was just standing there. I also found I was checking it compulsively, which wasn’t good for my mental health.