Hi everyone. Sorry to start a new thread on such a well covered topic such as this but I am short of one small piece of information. When I reach 70 (imminent ) I have to take a stress test on the treadmill as I have a heart problem. I know that they use the first 3 elements of something called the Bruce protocol, 1.7 m p h at 10% incline, 2.5 m p h at 12% incline and 3.4 m p h at 14% incline but can't seem to find info on period of time and whether the 3 are carried out on continuous basis. If any one has been through this process I would be grateful if you could give some idea of timing and anything else you think might help. Getting into training at the moment and hope to survive long enough to do test and maybe get C1 renewed. Many thanks.