I did start the stopwatch, but I was so pleased at managing the 1000, that I forgot to stop it until later. I'm sure I was going at slightly faster than 135bpm though, perhaps more like 145 or 150, so probably 7m to 7m15, something like that, at a guess.
Meanwhile, it's lunchtime.... time to fuel up, then head out to the garden for another day's training!