A few years ago I did my stress ECG and was not too worried about it [ well perhaps a bit] . Anyway the machne starts up and every 3 minutes the speed increase and the inclination increased. Now I had be told by a friend that usually at about 12 minutes they stopped it,but in my case they just carried on ever faster and steeper. I queried this ,but like many of you I was told that I had not reached the required heart beats and " do Not run" and "do not hold onto the rails"
Well after 15 minutes I felt I could not move my little legs any quicker without running and I eventually fell off the back of the machine, much to the nurse's concern not in case I had hurt myself, but because I had still not reached the required heart beats.