I did another workout today, and paid particular attention to the FTP before I started. The toggle bar was set in the correct position, and yet the intervals (part of FTP Builder Day Advanced program) were at 70% of my FTP, with the rest/recovery periods at 53% of my FTP.
It is an interesting idea, to do 5 minute Zone 2 intervals, but if that is the intended design, you are not going to get buy-in from this Joe Friel-philosophy oriented rider. I hold out for the idea that there is a disconnect between my FTP toggle and the interval set point in the workouts … maybe I need to wait until there is the opportunity to load my own workouts into the system.
Hope that is helpful,