Out to the garage after waking up for active recovery. I strapped on my heart rate monitor so that I could see exactly what zone I was in. I’ve always just guessed. Usually I keep the rpm at 55 when I do this, but quickly found out I could push a little harder and get up on the border between zone 1 and 2 with 59-60 rpm. Still felt fine and barely broke a sweat, going 14.56km in 30:00.
Nick Momrik's Fitness Logs 