Sorry to hear others of you have had trouble with this too. I have also done a few things without remembering how I got where I was or what I was doing. Running, the app might announce a certain mile (the app setting gives the mileage, time & split pace every mile), and I'll have not remembered running the last mile at all, but apparently I did. There were a couple of other occasions lately though now I can't remember them, probably thanks to the meds.